text:
Isotopes of bismuth

Bismuth (83Bi) has 41 known isotopes, ranging from 184Bi to 224Bi. Bismuth has no stable isotopes, but does have one very long-lived isotope; thus, the standard atomic weight can be given as $208.98$. Although bismuth-209 is now known to be radioactive, it has classically been considered to be a stable isotope because it has a half-life of approximately 2.01×1019 years, which is more than a billion times the age of the universe. Besides 209Bi, the most stable bismuth radioisotopes are 210mBi with a half-life of 3.04 million years, 208Bi with a half-life of 368,000 years and 207Bi, with a half-life of 32.9 years, none of which occurs in nature. All other isotopes have half-lives under 1 year, most under a day. Of naturally occurring radioisotopes, the most stable is radiogenic 210Bi with a half-life of 5.012 days. 210mBi is unusual for being a nuclear isomer with a half-life multiple orders of magnitude longer than that of the ground state.

List of isotopes

 * 184Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 101
 * 184.00135(13)#
 * 13(2) ms
 * α
 * 180Tl
 * 3+#
 * style="text-indent:1em" | 184mBi
 * colspan="3" style="text-indent:2em" | 150(100)# keV
 * 6.6(15) ms
 * α
 * 180Tl
 * 10−#
 * rowspan=2|185Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 102
 * rowspan=2|184.99760(9)#
 * rowspan=2|$2.8 μs$
 * p (92%)
 * 184Pb
 * rowspan=2|(1/2+)
 * rowspan=2|
 * α (8%)
 * 181Tl
 * style="text-indent:1em" | 185mBi
 * colspan="3" style="text-indent:2em" | 70(50)# keV
 * 58(2) μs
 * IT
 * 185Bi
 * (7/2−, 9/2−)
 * rowspan=3|186Bi
 * rowspan=3|
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 103
 * rowspan=3|185.996623(18)
 * rowspan=3|14.8(7) ms
 * α
 * 182Tl
 * rowspan=3|(3+)
 * rowspan=3|
 * β+?
 * 186Pb
 * β+, SF (0.011%)
 * (various)
 * rowspan=3 style="text-indent:1em" | 186mBi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 170(100)# keV
 * rowspan=3|9.8(4) ms
 * α
 * 182Tl
 * rowspan=3|(10−)
 * rowspan=3|
 * β+?
 * 186Pb
 * β+, SF (0.011%)
 * (various)
 * rowspan=2|187Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 104
 * rowspan=2|186.993147(11)
 * rowspan=2|37(2) ms
 * α
 * 183Tl
 * rowspan=2|(9/2−)
 * rowspan=2|
 * β+ (rare)
 * 187Pb
 * style="text-indent:1em" | 187m1Bi
 * colspan="3" style="text-indent:2em" | 108(8) keV
 * 370(20) μs
 * α
 * 183Tl
 * (1/2+)
 * style="text-indent:1em" | 187m2Bi
 * colspan="3" style="text-indent:2em" | 252(3) keV
 * 7(5) μs
 * IT
 * 187Bi
 * (13/2+)
 * rowspan=3|188Bi
 * rowspan=3|
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 105
 * rowspan=3| 187.992276(12)
 * rowspan=3|60(3) ms
 * α
 * 184Tl
 * rowspan=3|(3+)
 * rowspan=3|
 * β+ (rare)
 * 188Pb
 * β+, SF (0.0014%)
 * (various)
 * style="text-indent:1em" | 188m1Bi
 * colspan="3" style="text-indent:2em" | 66(30) keV
 * >5 μs
 * IT
 * 184Tl
 * 7+#
 * rowspan=2 style="text-indent:1em" | 188m2Bi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 153(30) keV
 * rowspan=2|265(15) ms
 * α
 * 184Tl
 * rowspan=2|(10−)
 * rowspan=2|
 * β+ (rare)
 * 188Pb
 * rowspan=2|189Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 106
 * rowspan=2|188.989195(22)
 * rowspan=2|688(5) ms
 * α
 * 185Tl
 * rowspan=2|(9/2−)
 * rowspan=2|
 * β+?
 * 189Pb
 * rowspan=2 style="text-indent:1em" | 189m1Bi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 184(5) keV
 * rowspan=2|5.0(1) ms
 * α (83%)
 * 185Tl
 * rowspan=2|(1/2+)
 * rowspan=2|
 * IT (17%)
 * 189Bi
 * style="text-indent:1em" | 189m2Bi
 * colspan="3" style="text-indent:2em" | 357.6(5) keV
 * 880(50) ns
 * IT
 * 189Bi
 * (13/2+)
 * rowspan=3|190Bi
 * rowspan=3|
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 107
 * rowspan=3|189.988625(23)
 * rowspan=3|6.3(1) s
 * α (77%)
 * 186Tl
 * rowspan=3|(3+)
 * rowspan=3|
 * β+ (23%)
 * 190Pb
 * β+, SF (6×10-6%)
 * (various)
 * rowspan=3 style="text-indent:1em" | 190m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 120(40) keV
 * rowspan=3|6.2(1) s
 * α (70%)
 * 186Tl
 * rowspan=3|(10−)
 * rowspan=3|
 * β+ (30%)
 * 190Pb
 * β+,SF (4×10-6%)
 * (various)
 * style="text-indent:1em" | 190m2Bi
 * colspan="3" style="text-indent:2em" | 121(15) keV
 * 175(8) ns
 * IT
 * 190Bi
 * (5−)
 * style="text-indent:1em" | 190m3Bi
 * colspan="3" style="text-indent:2em" | 394(40) keV
 * 1.3(8) μs
 * IT
 * 190Bi
 * (8−)
 * rowspan=2|191Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 108
 * rowspan=2|190.985787(8)
 * rowspan=2|12.4(3) s
 * α (51%)
 * 187Tl
 * rowspan=2|(9/2−)
 * rowspan=2|
 * β+ (49%)
 * 191Pb
 * rowspan=3 style="text-indent:1em" | 191m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 242(4) keV
 * rowspan=3|124(5) ms
 * α (68%)
 * 187Tl
 * rowspan=3|(1/2+)
 * rowspan=3|
 * IT (32%)
 * 191Bi
 * β+ (rare)
 * 191Pb
 * style="text-indent:1em" | 191m2Bi
 * colspan="3" style="text-indent:2em" | 429.7(5) keV
 * 562(10) ns
 * IT
 * 191Bi
 * (13/2+)
 * style="text-indent:1em" | 191m3Bi
 * colspan="3" style="text-indent:2em" | 1875(25)# keV
 * 400(40) ns
 * IT
 * 191Bi
 * 25/2-#
 * rowspan=2|192Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 109
 * rowspan=2|191.98547(3)
 * rowspan=2|34.6(9) s
 * β+ (82%)
 * 192Pb
 * rowspan=2|(3+)
 * rowspan=2|
 * α (18%)
 * 188Tl
 * rowspan=2 style="text-indent:1em" | 192mBi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 150(30) keV
 * rowspan=2|39.6(4) s
 * β+ (90.8%)
 * 192Pb
 * rowspan=2|(10−)
 * rowspan=2|
 * α (9.2%)
 * 188Tl
 * rowspan=2|193Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 110
 * rowspan=2|192.982947(8)
 * rowspan=2|67(3) s
 * β+ (95%)
 * 193Pb
 * rowspan=2|(9/2−)
 * rowspan=2|
 * α (5%)
 * 189Tl
 * rowspan=2 style="text-indent:1em" | 193mBi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 308(7) keV
 * rowspan=2|3.2(6) s
 * α (90%)
 * 189Tl
 * rowspan=2|(1/2+)
 * rowspan=2|
 * β+ (10%)
 * 193Pb
 * rowspan=2|194Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 111
 * rowspan=2|193.982799(6)
 * rowspan=2|95(3) s
 * β+ (99.54%)
 * 194Pb
 * rowspan=2|(3+)
 * rowspan=2|
 * α (.46%)
 * 190Tl
 * rowspan=2 style="text-indent:1em" | 194m1Bi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 110(70) keV
 * rowspan=2|125(2) s
 * β+
 * 194Pb
 * rowspan=2|(6+, 7+)
 * rowspan=2|
 * α (rare)
 * 190Tl
 * style="text-indent:1em" | 194m2Bi
 * colspan="3" style="text-indent:2em" | 230(90)# keV
 * 115(4) s
 * (10−)
 * rowspan=2|195Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 112
 * rowspan=2|194.980649(6)
 * rowspan=2|183(4) s
 * β+ (99.97%)
 * 195Pb
 * rowspan=2|(9/2−)
 * rowspan=2|
 * α (.03%)
 * 191Tl
 * rowspan=2 style="text-indent:1em" | 195m1Bi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 399(6) keV
 * rowspan=2|87(1) s
 * β+ (67%)
 * 195Pb
 * rowspan=2|(1/2+)
 * rowspan=2|
 * α (33%)
 * 191Tl
 * style="text-indent:1em" | 195m2Bi
 * colspan="3" style="text-indent:2em" | 2311.4+X keV
 * 750(50) ns
 * (29/2−)
 * rowspan=2|196Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 113
 * rowspan=2|195.980667(26)
 * rowspan=2|5.1(2) min
 * β+ (99.99%)
 * 196Pb
 * rowspan=2|(3+)
 * rowspan=2|
 * α (.00115%)
 * 192Tl
 * rowspan=2 style="text-indent:1em" | 196m1Bi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 166.6(30) keV
 * rowspan=2|0.6(5) s
 * IT
 * 196Bi
 * rowspan=2|(7+)
 * rowspan=2|
 * β+
 * 196Pb
 * style="text-indent:1em" | 196m2Bi
 * colspan="3" style="text-indent:2em" | 270(3) keV
 * 4.00(5) min
 * (10−)
 * rowspan=2|197Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 114
 * rowspan=2|196.978865(9)
 * rowspan=2|9.33(50) min
 * β+ (99.99%)
 * 197Pb
 * rowspan=2|(9/2−)
 * rowspan=2|
 * α (10−4%)
 * 193Tl
 * rowspan=3 style="text-indent:1em" | 197m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 690(110) keV
 * rowspan=3|5.04(16) min
 * α (55%)
 * 193Tl
 * rowspan=3|(1/2+)
 * rowspan=3|
 * β+ (45%)
 * 197Pb
 * IT (.3%)
 * 197Bi
 * style="text-indent:1em" | 197m2Bi
 * colspan="3" style="text-indent:2em" | 2129.3(4) keV
 * 204(18) ns
 * (23/2−)
 * style="text-indent:1em" | 197m3Bi
 * colspan="3" style="text-indent:2em" | 2360.4(5)+X keV
 * 263(13) ns
 * (29/2−)
 * style="text-indent:1em" | 197m4Bi
 * colspan="3" style="text-indent:2em" | 2383.1(7)+X keV
 * 253(39) ns
 * (29/2−)
 * style="text-indent:1em" | 197m5Bi
 * colspan="3" style="text-indent:2em" | 2929.5(5) keV
 * 209(30) ns
 * (31/2−)
 * 198Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 115
 * 197.979201(30)
 * 10.3(3) min
 * β+
 * 198Pb
 * (2+, 3+)
 * style="text-indent:1em" | 198m1Bi
 * colspan="3" style="text-indent:2em" | 280(40) keV
 * 11.6(3) min
 * β+
 * 198Pb
 * (7+)
 * style="text-indent:1em" | 198m2Bi
 * colspan="3" style="text-indent:2em" | 530(40) keV
 * 7.7(5) s
 * 10−
 * 199Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 116
 * 198.977673(11)
 * 27(1) min
 * β+
 * 199Pb
 * 9/2−
 * rowspan=3 style="text-indent:1em" | 199m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 667(4) keV
 * rowspan=3|24.70(15) min
 * β+ (98%)
 * 199Pb
 * rowspan=3|(1/2+)
 * rowspan=3|
 * IT (2%)
 * 199Bi
 * α (.01%)
 * 195Tl
 * style="text-indent:1em" | 199m2Bi
 * colspan="3" style="text-indent:2em" | 1947(25) keV
 * 0.10(3) μs
 * (25/2+)
 * style="text-indent:1em" | 199m3Bi
 * colspan="3" style="text-indent:2em" | ~2547.0 keV
 * 168(13) ns
 * 29/2−
 * 200Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 117
 * 199.978131(24)
 * 36.4(5) min
 * β+
 * 200Pb
 * 7+
 * rowspan=2 style="text-indent:1em" | 200m1Bi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 100(70)# keV
 * rowspan=2|31(2) min
 * EC (90%)
 * 200Pb
 * rowspan=2|(2+)
 * rowspan=2|
 * IT (10%)
 * 200Bi
 * style="text-indent:1em" | 200m2Bi
 * colspan="3" style="text-indent:2em" | 428.20(10) keV
 * 400(50) ms
 * (10−)
 * rowspan=2|201Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 118
 * rowspan=2|200.976995(13)
 * rowspan=2|108(3) min
 * β+ (99.99%)
 * 201Pb
 * rowspan=2|9/2−
 * rowspan=2|
 * α (10−4%)
 * 197Tl
 * rowspan=3 style="text-indent:1em" | 201m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 846.34(21) keV
 * rowspan=3|59.1(6) min
 * EC (92.9%)
 * 201Pb
 * rowspan=3|1/2+
 * rowspan=3|
 * IT (6.8%)
 * 201Bi
 * α (.3%)
 * 197Tl
 * style="text-indent:1em" | 201m2Bi
 * colspan="3" style="text-indent:2em" | 1932.2+X keV
 * 118(28) ns
 * (25/2+)
 * style="text-indent:1em" | 201m3Bi
 * colspan="3" style="text-indent:2em" | 1971.2+X keV
 * 105(75) ns
 * (27/2+)
 * style="text-indent:1em" | 201m4Bi
 * colspan="3" style="text-indent:2em" | 2739.90(20)+X keV
 * 124(4) ns
 * (29/2−)
 * rowspan=2|202Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 119
 * rowspan=2|201.977723(15)
 * rowspan=2|1.72(5) h
 * β+
 * 202Pb
 * rowspan=2|5(+#)
 * rowspan=2|
 * α (10−5%)
 * 198Tl
 * style="text-indent:1em" | 202m1Bi
 * colspan="3" style="text-indent:2em" | 615(7) keV
 * 3.04(6) μs
 * (10#)−
 * style="text-indent:1em" | 202m2Bi
 * colspan="3" style="text-indent:2em" | 2607.1(5) keV
 * 310(50) ns
 * (17+)
 * rowspan=2|203Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 120
 * rowspan=2|202.976892(14)
 * rowspan=2|11.76(5) h
 * β+
 * 203Pb
 * rowspan=2|9/2−
 * rowspan=2|
 * α (10−5%)
 * 199Tl
 * style="text-indent:1em" | 203m1Bi
 * colspan="3" style="text-indent:2em" | 1098.14(7) keV
 * 303(5) ms
 * IT
 * 203Bi
 * 1/2+
 * style="text-indent:1em" | 203m2Bi
 * colspan="3" style="text-indent:2em" | 2041.5(6) keV
 * 194(30) ns
 * 25/2+
 * 204Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 121
 * 203.977836(10)
 * 11.22(10) h
 * β+
 * 204Pb
 * 6+
 * style="text-indent:1em" | 204m1Bi
 * colspan="3" style="text-indent:2em" | 805.5(3) keV
 * 13.0(1) ms
 * IT
 * 204Bi
 * 10−
 * style="text-indent:1em" | 204m2Bi
 * colspan="3" style="text-indent:2em" | 2833.4(11) keV
 * 1.07(3) ms
 * (17+)
 * 205Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 122
 * 204.977385(5)
 * 15.31(4) d
 * β+
 * 205Pb
 * 9/2−
 * 206Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 123
 * 205.978499(8)
 * 6.243(3) d
 * β+
 * 206Pb
 * 6(+)
 * style="text-indent:1em" | 206m1Bi
 * colspan="3" style="text-indent:2em" | 59.897(17) keV
 * 7.7(2) μs
 * (4+)
 * style="text-indent:1em" | 206m2Bi
 * colspan="3" style="text-indent:2em" | 1044.8(5) keV
 * 890(10) μs
 * (10−)
 * 207Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 124
 * 206.9784706(26)
 * 32.9(14) y
 * β+
 * 207Pb
 * 9/2−
 * style="text-indent:1em" | 207mBi
 * colspan="3" style="text-indent:2em" | 2101.49(16) keV
 * 182(6) μs
 * 21/2+
 * 208Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 125
 * 207.9797421(25)
 * 3.68(4)×105 y
 * β+
 * 208Pb
 * (5)+
 * style="text-indent:1em" | 208mBi
 * colspan="3" style="text-indent:2em" | 1571.1(4) keV
 * 2.58(4) ms
 * IT
 * 208Bi
 * (10)−
 * 209Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 126
 * 208.9803986(15)
 * 2.01(8)×1019 y
 * α
 * 205Tl
 * 9/2−
 * 1.0000
 * rowspan=2|210Bi
 * rowspan=2|Radium E
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 127
 * rowspan=2|209.9841202(15)
 * rowspan=2|5.012(5) d
 * β−
 * 210Po
 * rowspan=2|1−
 * rowspan=2|Trace
 * α (1.32×10−4%)
 * 206Tl
 * style="text-indent:1em" | 210mBi
 * colspan="3" style="text-indent:2em" | 271.31(11) keV
 * 3.04(6)×106 y
 * α
 * 206Tl
 * 9−
 * rowspan=2|211Bi
 * rowspan=2|Actinium C
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 128
 * rowspan=2|210.987269(6)
 * rowspan=2|2.14(2) min
 * α (99.72%)
 * 207Tl
 * rowspan=2|9/2−
 * rowspan=2|Trace
 * β− (.276%)
 * 211Po
 * style="text-indent:1em" | 211mBi
 * colspan="3" style="text-indent:2em" | 1257(10) keV
 * 1.4(3) μs
 * (25/2−)
 * rowspan=3|212Bi
 * rowspan=3|Thorium C
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 129
 * rowspan=3|211.991285(2)
 * rowspan=3|60.55(6) min
 * β− (64.05%)
 * 212Po
 * rowspan=3|1(−)
 * rowspan=3|Trace
 * α (35.94%)
 * 208Tl
 * β−, α (.014%)
 * 208Pb
 * rowspan=3 style="text-indent:1em" | 212m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 250(30) keV
 * rowspan=3|25.0(2) min
 * α (67%)
 * 208Tl
 * rowspan=3|(9−)
 * rowspan=3|
 * β− (33%)
 * 212mPo
 * β−, α (.3%)
 * 208Pb
 * style="text-indent:1em" | 212m2Bi
 * colspan="3" style="text-indent:2em" | 2200(200)# keV
 * 7.0(3) min
 * >16
 * rowspan=2|213Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|212.994384(5)
 * rowspan=2|45.59(6) min
 * β− (97.91%)
 * 213Po
 * rowspan=2|9/2−
 * rowspan=2|Trace
 * α (2.09%)
 * 209Tl
 * rowspan=3|214Bi
 * rowspan=3|Radium C
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 131
 * rowspan=3|213.998711(12)
 * rowspan=3|19.9(4) min
 * β− (99.97%)
 * 214Po
 * rowspan=3|1−
 * rowspan=3|Trace
 * α (.021%)
 * 210Tl
 * β−, α (.003%)
 * 210Pb
 * 215Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 132
 * 215.001749(6)
 * 7.6(2) min
 * β−
 * 215Po
 * (9/2−)
 * Trace
 * rowspan=2 style="text-indent:1em" | 215mBi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 1347.5(25) keV
 * rowspan=2| 36.9(6) s
 * IT (76.9%)
 * 215Bi
 * rowspan=2| (25/2−)
 * rowspan=2|
 * β− (23.1%)
 * 215Po
 * 216Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 133
 * 216.006306(12)
 * 2.17(5) min
 * β−
 * 216Po
 * (6−, 7−)
 * style="text-indent:1em" | 216mBi
 * colspan="3" style="text-indent:2em" | 24(19) keV
 * 6.6(21) min
 * β−
 * 216Po
 * 3−#
 * 217Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 134
 * 217.009372(19)
 * 98.5(8) s
 * β−
 * 217Po
 * 9/2−#
 * style="text-indent:1em" | 217mBi
 * colspan="3" style="text-indent:2em" | 1480(40) keV
 * 2.70(6) μs
 * IT
 * 217Bi
 * 25/2−#
 * 218Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 135
 * 218.014188(29)
 * 33(1) s
 * β−
 * 218Po
 * (6−, 7−, 8−)
 * 219Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 136
 * 219.01752(22)#
 * 8.7(29) s
 * β−
 * 219Po
 * 9/2−#
 * 220Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 137
 * 220.02250(32)#
 * 9.5(57) s
 * β−
 * 220Po
 * 1−#
 * rowspan=2| 221Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 138
 * rowspan=2|221.02598(32)#
 * rowspan=2| 2# s
 * β−?
 * 221Po
 * rowspan=2| 9/2−#
 * rowspan=2|
 * β−, n?
 * 220Po
 * rowspan=2| 222Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 139
 * rowspan=2|222.03108(32)#
 * rowspan=2| 3# s
 * β−?
 * 222Po
 * rowspan=2| 1−#
 * rowspan=2|
 * β−, n?
 * 221Po
 * rowspan=2| 223Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 140
 * rowspan=2| 223.03461(43)#
 * rowspan=2| 1# s
 * β−?
 * 223Po
 * rowspan=2| 9/2−#
 * rowspan=2|
 * β−, n?
 * 222Po
 * rowspan=2| 224Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 141
 * rowspan=2|224.03980(43)#
 * rowspan=2| 1# s
 * β−?
 * 224Po
 * rowspan=2|1−#
 * rowspan=2|
 * β−, n?
 * 223Po
 * 182(6) μs
 * 21/2+
 * 208Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 125
 * 207.9797421(25)
 * 3.68(4)×105 y
 * β+
 * 208Pb
 * (5)+
 * style="text-indent:1em" | 208mBi
 * colspan="3" style="text-indent:2em" | 1571.1(4) keV
 * 2.58(4) ms
 * IT
 * 208Bi
 * (10)−
 * 209Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 126
 * 208.9803986(15)
 * 2.01(8)×1019 y
 * α
 * 205Tl
 * 9/2−
 * 1.0000
 * rowspan=2|210Bi
 * rowspan=2|Radium E
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 127
 * rowspan=2|209.9841202(15)
 * rowspan=2|5.012(5) d
 * β−
 * 210Po
 * rowspan=2|1−
 * rowspan=2|Trace
 * α (1.32×10−4%)
 * 206Tl
 * style="text-indent:1em" | 210mBi
 * colspan="3" style="text-indent:2em" | 271.31(11) keV
 * 3.04(6)×106 y
 * α
 * 206Tl
 * 9−
 * rowspan=2|211Bi
 * rowspan=2|Actinium C
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 128
 * rowspan=2|210.987269(6)
 * rowspan=2|2.14(2) min
 * α (99.72%)
 * 207Tl
 * rowspan=2|9/2−
 * rowspan=2|Trace
 * β− (.276%)
 * 211Po
 * style="text-indent:1em" | 211mBi
 * colspan="3" style="text-indent:2em" | 1257(10) keV
 * 1.4(3) μs
 * (25/2−)
 * rowspan=3|212Bi
 * rowspan=3|Thorium C
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 129
 * rowspan=3|211.991285(2)
 * rowspan=3|60.55(6) min
 * β− (64.05%)
 * 212Po
 * rowspan=3|1(−)
 * rowspan=3|Trace
 * α (35.94%)
 * 208Tl
 * β−, α (.014%)
 * 208Pb
 * rowspan=3 style="text-indent:1em" | 212m1Bi
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 250(30) keV
 * rowspan=3|25.0(2) min
 * α (67%)
 * 208Tl
 * rowspan=3|(9−)
 * rowspan=3|
 * β− (33%)
 * 212mPo
 * β−, α (.3%)
 * 208Pb
 * style="text-indent:1em" | 212m2Bi
 * colspan="3" style="text-indent:2em" | 2200(200)# keV
 * 7.0(3) min
 * >16
 * rowspan=2|213Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|212.994384(5)
 * rowspan=2|45.59(6) min
 * β− (97.91%)
 * 213Po
 * rowspan=2|9/2−
 * rowspan=2|Trace
 * α (2.09%)
 * 209Tl
 * rowspan=3|214Bi
 * rowspan=3|Radium C
 * rowspan=3 style="text-align:right" | 83
 * rowspan=3 style="text-align:right" | 131
 * rowspan=3|213.998711(12)
 * rowspan=3|19.9(4) min
 * β− (99.97%)
 * 214Po
 * rowspan=3|1−
 * rowspan=3|Trace
 * α (.021%)
 * 210Tl
 * β−, α (.003%)
 * 210Pb
 * 215Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 132
 * 215.001749(6)
 * 7.6(2) min
 * β−
 * 215Po
 * (9/2−)
 * Trace
 * rowspan=2 style="text-indent:1em" | 215mBi
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 1347.5(25) keV
 * rowspan=2| 36.9(6) s
 * IT (76.9%)
 * 215Bi
 * rowspan=2| (25/2−)
 * rowspan=2|
 * β− (23.1%)
 * 215Po
 * 216Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 133
 * 216.006306(12)
 * 2.17(5) min
 * β−
 * 216Po
 * (6−, 7−)
 * style="text-indent:1em" | 216mBi
 * colspan="3" style="text-indent:2em" | 24(19) keV
 * 6.6(21) min
 * β−
 * 216Po
 * 3−#
 * 217Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 134
 * 217.009372(19)
 * 98.5(8) s
 * β−
 * 217Po
 * 9/2−#
 * style="text-indent:1em" | 217mBi
 * colspan="3" style="text-indent:2em" | 1480(40) keV
 * 2.70(6) μs
 * IT
 * 217Bi
 * 25/2−#
 * 218Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 135
 * 218.014188(29)
 * 33(1) s
 * β−
 * 218Po
 * (6−, 7−, 8−)
 * 219Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 136
 * 219.01752(22)#
 * 8.7(29) s
 * β−
 * 219Po
 * 9/2−#
 * 220Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 137
 * 220.02250(32)#
 * 9.5(57) s
 * β−
 * 220Po
 * 1−#
 * rowspan=2| 221Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 138
 * rowspan=2|221.02598(32)#
 * rowspan=2| 2# s
 * β−?
 * 221Po
 * rowspan=2| 9/2−#
 * rowspan=2|
 * β−, n?
 * 220Po
 * rowspan=2| 222Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 139
 * rowspan=2|222.03108(32)#
 * rowspan=2| 3# s
 * β−?
 * 222Po
 * rowspan=2| 1−#
 * rowspan=2|
 * β−, n?
 * 221Po
 * rowspan=2| 223Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 140
 * rowspan=2| 223.03461(43)#
 * rowspan=2| 1# s
 * β−?
 * 223Po
 * rowspan=2| 9/2−#
 * rowspan=2|
 * β−, n?
 * 222Po
 * rowspan=2| 224Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 141
 * rowspan=2|224.03980(43)#
 * rowspan=2| 1# s
 * β−?
 * 224Po
 * rowspan=2|1−#
 * rowspan=2|
 * β−, n?
 * 223Po
 * 8.7(29) s
 * β−
 * 219Po
 * 9/2−#
 * 220Bi
 * style="text-align:right" | 83
 * style="text-align:right" | 137
 * 220.02250(32)#
 * 9.5(57) s
 * β−
 * 220Po
 * 1−#
 * rowspan=2| 221Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 138
 * rowspan=2|221.02598(32)#
 * rowspan=2| 2# s
 * β−?
 * 221Po
 * rowspan=2| 9/2−#
 * rowspan=2|
 * β−, n?
 * 220Po
 * rowspan=2| 222Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 139
 * rowspan=2|222.03108(32)#
 * rowspan=2| 3# s
 * β−?
 * 222Po
 * rowspan=2| 1−#
 * rowspan=2|
 * β−, n?
 * 221Po
 * rowspan=2| 223Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 140
 * rowspan=2| 223.03461(43)#
 * rowspan=2| 1# s
 * β−?
 * 223Po
 * rowspan=2| 9/2−#
 * rowspan=2|
 * β−, n?
 * 222Po
 * rowspan=2| 224Bi
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 141
 * rowspan=2|224.03980(43)#
 * rowspan=2| 1# s
 * β−?
 * 224Po
 * rowspan=2|1−#
 * rowspan=2|
 * β−, n?
 * 223Po
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2 style="text-align:right" | 141
 * rowspan=2|224.03980(43)#
 * rowspan=2| 1# s
 * β−?
 * 224Po
 * rowspan=2|1−#
 * rowspan=2|
 * β−, n?
 * 223Po
 * 223Po

Bismuth-213
Bismuth-213 (213Bi) has a half-life of 45 minutes and decays via alpha emission. Commercially, bismuth-213 can be produced by bombarding radium with bremsstrahlung photons from a linear particle accelerator, which populates its progenitor actinium-225. In 1997, an antibody conjugate with 213Bi was used to treat patients with leukemia. This isotope has also been tried in targeted alpha therapy (TAT) program to treat a variety of cancers. Bismuth-213 is also found in the decay chain of uranium-233, which is the fuel bred by thorium reactors.

title: Isotopes of bismuth


text:
User talk:Daleh

Please feel free to leave me messages here. Dont forget to sign with four tilds ( ~ ). Thanks!

DOL Starter
The pictures are my own.

Hi Msdaif. I like the pictures on the Direct on line starter page, and would like to help expanding the page and see the animation for direction reversal being placed back, this time with correct reference. If you keen to continue contract me on my talk page. Cheers --Daleh T 10:28, 27 October 2007 (UTC)

The Scissors
I didn't think anybody even looked at that article. Thanks for editing it though, but why did you make the picture so big? --EMC 01:03, 22 April 2006 (UTC)

Vedeneyev
Sorry about that, will fix... V. Joe 17:20, 12 June 2006 (UTC) Please see my attached notes at the articles talk page. Cheers V. Joe 17:35, 12 June 2006 (UTC)

Competition aerobatics
Hi, I just wanted to let you know that I've tagged the fair use image you uploaded box.gif for deletion, as I've created an alternative free svg version of it. For future reference, I do not believe the image counted as fair use as it is easily replicable. Also please remember to use a fair use rational for each image. You might well do that now as the image in question was uploaded two years ago. :-) If there is anything that you would like me to fix or change with the new aerobatic box.svg let me know, or feel free to change it yourself. Thanks. Mehmet Karatay 13:28, 3 July 2007 (UTC)
 * Hi Mehmet, thanks for the new SVG file, I really like it. Thanks for the effort. (I hope you dont mind, but I do have a comment. Perhaps the ground could be a bit more prominent, and green? So that it makes it a little more obvious that the box floor is above the ground?) With regards to the gif image that I uploaded, there are so many licenses, and although I spent a considerable amount of time looking into it, I didnt (and still dont) understand the licenses and their diferences. Is there a "dummys guide to Wikipedia Image Licensing"? :-) I dont upload images for this very reason, (even if I do get permision) unless I created them myself. Thanks again. --Daleh 08:27, 4 July 2007 (UTC)

 * I'm glad you like the new file. I was thinking about the ground being emphasised as well. Of course I don't mind you having a comment. That was why I asked you if everything was okay with it. :-) I'll make that change when I have a bit of spare time, I have a good idea of how to go about it.

 * Regarding the guide to Image Licensing I'll try to explain a few things here. Most images you find will be copyrighted and therefore not suitable for use on Wikipedia. For images you don't create yourself, unless it explicitly qualifies as one of the licenses on commons:Copyright tags then it is generally not suitable. If it does qualify, then there should be little doubt that the appropriate license is applicable. The most common licenses that get used for images found elsewhere are copyright expiry (usually older than 70 years since death of author) or the work belonging to the United States Government or NASA.

 * Fair use is where it gets a bit more interesting. For an image to qualify as fair use you have to prove that it cannot be replicated freely and that its use will not adversely affect the copyright holder. For each article that the image appears in, you must give a fair use rational explaining why it adds to the article in a way that a free image would not. Fair use is mostly used for historical events, deceased people where a photograph can no longer be taken, album covers or film/television scenes. Image:Batian_first_ascent_low_res.jpeg is the only image I've uploaded as fair use and it hopefully gives examples of the points I'm attempting to make. Image:Najimy_MaryPatrick.jpg has an example of a well written fair use rational.

 * To summarise, most images you find will not be suitable for use on Wikipedia which is probably why you were struggling to find a license. If the image is available under a free license then that commons link will have a description which fits exactly. Finally, here are a few pages which may help:
 * commons:Copyright tags Any free license you use will be listed here. The descriptions are usually helpful.
 * Free image resources has links to sites where the images are under a free license.
 * Image_copyright_tags/All has specific fair use tags, but remember you must in addition supply a fair use rational for every page the image appears on.
 * help desk is a good place to ask if you are unsure about the copyright status of a particular image.

 * Don't let the licensing discourage you from putting images on here, just try to ask someone beforehand if you are unsure about which license applies. I hope this helps, but if anything is unclear ask and I'll try to clarify what I've said. Mehmet Karatay 09:18, 4 July 2007 (UTC)
 * Thanks for all this info. If I'm ever in doubt I will seek your advice! --Daleh 16:35, 4 July 2007 (UTC)
 * I've put some ground in now, hope you like it. Mehmet Karatay 12:13, 4 July 2007 (UTC)
 * And this pic looks great. Cool little aeroplane. --Daleh 16:35, 4 July 2007 (UTC)
 * I'm afraid I can't take any credit for the aeroplane or the man as they are both from the Open Clip Art Library. I merely rotated the plane for the desired effect. Mehmet Karatay 17:34, 4 July 2007 (UTC)

Little context in Vibration analysis
Hello, this is a message from an automated bot. A tag has been placed on Vibration analysis, by another Wikipedia user, requesting that it be speedily deleted from Wikipedia. The tag claims that it should be speedily deleted because Vibration analysis is very short providing little or no context to the reader. Please see Wikipedia:Stub for our minimum information standards for short articles. To contest the tagging and request that administrators wait before possibly deleting Vibration analysis, please affix the template to the page, and put a note on its talk page. If the article has already been deleted, see the advice and instructions at WP:WMD. Feel free to contact the bot operator if you have any questions about this or any problems with this bot, bearing in mind that this bot is only informing you of the nomination for speedy deletion; it does not perform any nominations or deletions itself. CSDWarnBot 23:11, 16 October 2007 (UTC)

Removed link NMEA-0183 page
Dale, Thank you for reminding me that commercial links are not appreciated and for rücksickslos replacing my link on the NMEA-0183 information page by a link to your own pages. But your justification in your comment that the site does not contribute with useful information I completely disagree with. On our site one can find a lot of information on the NMEA-0183 protocol, amongst others on the "NMEA Information" page (including a link to your pages...). Besides, people can download useful software to explore the NMEA-0183 protocol, the trial versions are completely fully functional. But what wonders me most is why you did not remove the link of Constellation Data also. This is a BIG commercial operation offerring little or no NMEA information on the site. /Ger --Ger.rietman 09:27, 8 November 2007 (UTC)
 * Hi Ger. As you know, Wikipedia is all about editing each others work, and hopefully coming to a moderate and above all, correct position in each article. It is my opinion that the SailSoft website is promoting software, and not information about NMEA. The "NMEA information" page does not have much detail, and does not expand much on what is already said on the Wikipedia page about NMEA. However, the links on that page do have a lot more content for those who wish to research further. For the record, I am NOT the same Dale who wrote those articles, and I am in no way affiliated to his. The reason I changed your link was because it came up on my Watch list. If you feel that Constellation Data is also commercial then remove it as well. Please have a look at []. Kind regards, --Daleh T 08:30, 9 November 2007 (UTC)

River delta
I replied to your talk-page comment about river deltas and alluvial fans - hopefully you're still interested after a year. Awickert (talk) 19:02, 6 December 2008 (UTC)

Hi
Thanks for this:http://commons.wikimedia.org/wiki/Category:Aresti-Symbols

--AeroPsico (talk) 09:01, 19 April 2011 (UTC)

File:SA Sportsman Known 2005.jpg listed for deletion
A file that you uploaded or altered, File:SA Sportsman Known 2005.jpg, has been listed at Files for deletion. Please see the to see why this is (you may have to search for the title of the image to find its entry), if you are interested in it not being deleted. Thank you. -- Тимофей ЛееСуда . 15:30, 27 March 2012 (UTC)

ArbCom elections are now open!
MediaWiki message delivery (talk) 13:09, 23 November 2015 (UTC)

ArbCom elections are now open!
MediaWiki message delivery (talk) 13:33, 23 November 2015 (UTC)

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: User talk:Daleh


text:
Géza Malasits

Géza Malasits (1874–1948) was a Hungarian politician.

Member of the Hungarian Social-Democratic Party, Malasits was a deputy of the Hungarian parliament after 1924. As a self-educated worker, he learned several languages beyond Hungarian and Croatian and broadened his outlook in England. He was arrested in 1944 by the Gestapo and deported to a concentration camp, but survived the afflictions.

Following his conviction, Malasits converted to Unitarianism and later became a member of the Church Council of the Unitarian Church in Hungary.

title: Géza Malasits


text: Category:Marne (department)

title: Category:Marne (department)


text:
Emmanuel Cosquin

Emmanuel Cosquin (1841 – 1919) was a French folklorist. He wrote the Popular Tales of Lorraine, in the introduction to which he argues for the theory that the development as well as the origin of such tales is historically traceable to India.

Publications

 * Contes populaires de Lorraine (Paris, 1860) - two volumes
 * Les Contes indiens et l'occident: petites monographies folkloriques à propos de contes Maures. Paris: Édouard Champion. 1922.

title: Emmanuel Cosquin


text:
Kløfta

Kløfta is a town located in Ullensaker, Akershus, Norway. It has a population of 8,371 inhabitants as of December 12th, 2023. Kløfta has a growing sports team Kløfta IL which consists of football, handball, basketball, e-sports, table tennis, cycling and floorball. A large sports park has also been built in Bakkedalen. There are also a local shopping market locatede in Kløfta Romerikssenteret. Kløfta has three schools – a middle school and two first through seventh grade school, and several kindergartens.

Background
Literally translated, the name means 'the cleft' in English. It probably refers to a junction of three roads heading for Oslo, Trondheim and Kongsvinger. At Kløfta, the road RV2 towards Sweden branches off from the E6. Two railway lines to the north also split here.

Norway's main prison, Ullersmo prison, is located in Kløfta. It is also home to some of the largest farming equipment companies in Norway. Ullensaker Church, built in 1958, lies just outside Kløfta. This church is often referred to as the "Romerike cathedral".

Augustus Halvorsen Hilton (1854-1919), the father of American hotelier Conrad Hilton and emigrant to the United States, was born in Kløfta.

Kløfta was, until 1995, the location of a longwave broadcasting station, which broadcast on 216 kHz.

title: Kløfta


text:
Isotopes of thallium

Thallium (81Tl) has 41 isotopes with atomic masses that range from 176 to 216. 203Tl and 205Tl are the only stable isotopes and 204Tl is the most stable radioisotope with a half-life of 3.78 years. 207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring Tl radioisotopes. All isotopes of thallium are either radioactive or observationally stable, meaning that they are predicted to be radioactive but no actual decay has been observed.

Thallium-202 (half-life 12.23 days) can be made in a cyclotron while thallium-204 (half-life 3.78 years) is made by the neutron activation of stable thallium in a nuclear reactor.

In the fully ionized state, the isotope 205Tl becomes beta-radioactive, decaying to 205Pb, but 203Tl remains stable.

205Tl is the decay product of bismuth-209, an isotope that was once thought to be stable but is now known to undergo alpha decay with an extremely long half-life of 2.01×1019 y. 205Tl is at the end of the neptunium series decay chain.

List of isotopes

 * rowspan=2|176Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 95
 * rowspan=2|176.00059(21)#
 * rowspan=2|$2.4 ms$
 * p (~63%)
 * 175Hg
 * rowspan=2|(3−, 4−, 5−)
 * rowspan=2|
 * rowspan=2|
 * α (~37%)
 * 172Au
 * rowspan=2 style="text-indent:1em" | 176mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | ~671 keV
 * rowspan=2|$290 μs$
 * p (~50%)
 * 175Hg
 * rowspan=2|
 * rowspan=2|
 * rowspan=2|
 * α (~50%)
 * 172mAu
 * rowspan=2|177Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 96
 * rowspan=2|176.996427(27)
 * rowspan=2|18(5) ms
 * α (73%)
 * 173Au
 * rowspan=2|(1/2+)
 * rowspan=2|
 * rowspan=2|
 * p (27%)
 * 176Hg
 * rowspan=2 style="text-indent:1em" | 177mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 807(18) keV
 * rowspan=2|230(40) μs
 * p (51%)
 * 176Hg
 * rowspan=2|(11/2−)
 * rowspan=2|
 * rowspan=2|
 * α (49%)
 * 173Au
 * rowspan=3|178Tl
 * rowspan=3|
 * rowspan=3 style="text-align:right" | 81
 * rowspan=3 style="text-align:right" | 97
 * rowspan=3|177.99490(12)#
 * rowspan=3|255(9) ms
 * α (62%)
 * 174Au
 * rowspan=3| (4-,5-)
 * rowspan=3|
 * rowspan=3|
 * β+ (38%)
 * 178Hg
 * β+, SF (0.15%)
 * (various)
 * rowspan=2|179Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 98
 * rowspan=2|178.99109(5)
 * rowspan=2|437(9) ms
 * α (60%)
 * 175Au
 * rowspan=2|(1/2+)
 * rowspan=2|
 * rowspan=2|
 * β+ (40%)
 * 179Hg
 * rowspan=3 style="text-indent:1em" | 179m1Tl
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 825(10)# keV
 * rowspan=3|1.41(2) ms
 * α
 * 175Au
 * rowspan=3|(11/2−)
 * rowspan=3|
 * rowspan=3|
 * IT (rare)
 * 179Tl
 * β+ (rare)
 * 179Hg
 * style="text-indent:1em" | 179m2Tl
 * colspan="3" style="text-indent:2em" | 904.5(9) keV
 * 119(14) ns
 * IT
 * 179Tl
 * (9/2−)
 * rowspan=3|180Tl
 * rowspan=3|
 * rowspan=3 style="text-align:right" | 81
 * rowspan=3 style="text-align:right" | 99
 * rowspan=3|179.98991(13)#
 * rowspan=3|1.09(1) s
 * β+ (93%)
 * 180Hg
 * rowspan=3| 4-#
 * rowspan=3|
 * rowspan=3|
 * α (7%)
 * 176Au
 * β+, SF (0.0032%)
 * 100Ru, 80Kr
 * rowspan=2|181Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 100
 * rowspan=2|180.986257(10)
 * rowspan=2|2.9(1) s
 * β+ (91.4%)
 * 181Hg
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * α (8.6%)
 * 177Au
 * rowspan=2 style="text-indent:1em" | 181mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 834.9(4) keV
 * rowspan=2|1.40(3) ms
 * IT (99.60%)
 * 181Tl
 * rowspan=2|(9/2−)
 * rowspan=2|
 * rowspan=2|
 * α (0.40%)
 * 177Au
 * rowspan=2|182Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 101
 * rowspan=2|181.98567(8)
 * rowspan=2|2.0(3) s
 * β+ (96%)
 * 182Hg
 * rowspan=2|2−#
 * rowspan=2|
 * rowspan=2|
 * α (4%)
 * 178Au
 * rowspan=2 style="text-indent:1em" | 182m1Tl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 100(100)# keV
 * rowspan=2|2.9(5) s
 * α
 * 178Au
 * rowspan=2|(7+)
 * rowspan=2|
 * rowspan=2|
 * β+ (rare)
 * 182Hg
 * style="text-indent:1em" | 182m2Tl
 * colspan="3" style="text-indent:2em" | 600(140)# keV
 * 10−
 * rowspan=2|183Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 102
 * rowspan=2|182.982193(10)
 * rowspan=2|6.9(7) s
 * β+ (98%)
 * 183Hg
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * α (2%)
 * 179Au
 * rowspan=2 style="text-indent:1em" | 183m1Tl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 630(17) keV
 * rowspan=2|53.3(3) ms
 * IT (99.99%)
 * 183Tl
 * rowspan=2|9/2−#
 * rowspan=2|
 * rowspan=2|
 * α (.01%)
 * 179Au
 * style="text-indent:1em" | 183m2Tl
 * colspan="3" style="text-indent:2em" | 976.8(3) keV
 * 1.48(10) μs
 * (13/2+)
 * 184Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 103
 * 183.98187(5)
 * 9.7(6) s
 * β+
 * 184Hg
 * 2−#
 * rowspan=2 style="text-indent:1em" | 184m1Tl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 100(100)# keV
 * rowspan=2|10# s
 * β+ (97.9%)
 * 184Hg
 * rowspan=2|7+#
 * rowspan=2|
 * rowspan=2|
 * α (2.1%)
 * 180Au
 * rowspan=2 style="text-indent:1em" | 184m2Tl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 500(140)# keV
 * rowspan=2| 47.1 ms
 * IT (99.911%)
 * rowspan=2|(10−)
 * rowspan=2|
 * rowspan=2|
 * α (.089%)
 * 180Au
 * rowspan=2|185Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 104
 * rowspan=2|184.97879(6)
 * rowspan=2|19.5(5) s
 * α
 * 181Au
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * β+
 * 185Hg
 * rowspan=3 style="text-indent:1em" | 185mTl
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 452.8(20) keV
 * rowspan=3|1.93(8) s
 * IT (99.99%)
 * 185Tl
 * rowspan=3|9/2−#
 * rowspan=3|
 * rowspan=3|
 * α (.01%)
 * 181Au
 * β+
 * 185Hg
 * rowspan=2|186Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 105
 * rowspan=2|185.97833(20)
 * rowspan=2|40# s
 * β+
 * 186Hg
 * rowspan=2|(2−)
 * rowspan=2|
 * rowspan=2|
 * α (.006%)
 * 182Au
 * style="text-indent:1em" | 186m1Tl
 * colspan="3" style="text-indent:2em" | 320(180) keV
 * 27.5(10) s
 * β+
 * 186Hg
 * (7+)
 * style="text-indent:1em" | 186m2Tl
 * colspan="3" style="text-indent:2em" | 690(180) keV
 * 2.9(2) s
 * (10−)
 * rowspan=2|187Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 106
 * rowspan=2|186.975906(9)
 * rowspan=2|~51 s
 * β+
 * 187Hg
 * rowspan=2|(1/2+)
 * rowspan=2|
 * rowspan=2|
 * α (rare)
 * 183Au
 * rowspan=3 style="text-indent:1em" | 187mTl
 * rowspan=3|
 * rowspan=3 colspan="3" style="text-indent:2em" | 335(3) keV
 * rowspan=3|15.60(12) s
 * α
 * 183Au
 * rowspan=3|(9/2−)
 * rowspan=3|
 * rowspan=3|
 * IT
 * 187Tl
 * β+
 * 187Hg
 * 188Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 107
 * 187.97601(4)
 * 71(2) s
 * β+
 * 188Hg
 * (2−)
 * style="text-indent:1em" | 188m1Tl
 * colspan="3" style="text-indent:2em" | 40(30) keV
 * 71(1) s
 * β+
 * 188Hg
 * (7+)
 * style="text-indent:1em" | 188m2Tl
 * colspan="3" style="text-indent:2em" | 310(30) keV
 * 41(4) ms
 * (9−)
 * 189Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 108
 * 188.973588(12)
 * 2.3(2) min
 * β+
 * 189Hg
 * (1/2+)
 * rowspan=2 style="text-indent:1em" | 189mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 257.6(13) keV
 * rowspan=2|1.4(1) min
 * β+ (96%)
 * 189Hg
 * rowspan=2|(9/2−)
 * rowspan=2|
 * rowspan=2|
 * IT (4%)
 * 189Tl
 * 190Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 109
 * 189.97388(5)
 * 2.6(3) min
 * β+
 * 190Hg
 * 2(−)
 * style="text-indent:1em" | 190m1Tl
 * colspan="3" style="text-indent:2em" | 130(90)# keV
 * 3.7(3) min
 * β+
 * 190Hg
 * 7(+#)
 * style="text-indent:1em" | 190m2Tl
 * colspan="3" style="text-indent:2em" | 290(70)# keV
 * 750(40) μs
 * (8−)
 * style="text-indent:1em" | 190m3Tl
 * colspan="3" style="text-indent:2em" | 410(70)# keV
 * >1 μs
 * 9−
 * 191Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 110
 * 190.971786(8)
 * 20# min
 * β+
 * 191Hg
 * (1/2+)
 * style="text-indent:1em" | 191mTl
 * colspan="3" style="text-indent:2em" | 297(7) keV
 * 5.22(16) min
 * β+
 * 191Hg
 * 9/2(−)
 * 192Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 111
 * 191.97223(3)
 * 9.6(4) min
 * β+
 * 192Hg
 * (2−)
 * style="text-indent:1em" | 192m1Tl
 * colspan="3" style="text-indent:2em" | 160(50) keV
 * 10.8(2) min
 * β+
 * 192Hg
 * (7+)
 * style="text-indent:1em" | 192m2Tl
 * colspan="3" style="text-indent:2em" | 407(54) keV
 * 296(5) ns
 * (8−)
 * 193Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 112
 * 192.97067(12)
 * 21.6(8) min
 * β+
 * 193Hg
 * 1/2(+#)
 * rowspan=2 style="text-indent:1em" | 193mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 369(4) keV
 * rowspan=2|2.11(15) min
 * IT (75%)
 * 193Tl
 * rowspan=2|9/2−
 * rowspan=2|
 * rowspan=2|
 * β+ (25%)
 * 193Hg
 * rowspan=2|194Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 113
 * rowspan=2|193.97120(15)
 * rowspan=2|33.0(5) min
 * β+
 * 194Hg
 * rowspan=2|2−
 * rowspan=2|
 * rowspan=2|
 * α (10−7%)
 * 190Au
 * style="text-indent:1em" | 194mTl
 * colspan="3" style="text-indent:2em" | 300(200)# keV
 * 32.8(2) min
 * β+
 * 194Hg
 * (7+)
 * 195Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 114
 * 194.969774(15)
 * 1.16(5) h
 * β+
 * 195Hg
 * 1/2+
 * style="text-indent:1em" | 195mTl
 * colspan="3" style="text-indent:2em" | 482.63(17) keV
 * 3.6(4) s
 * IT
 * 195Tl
 * 9/2−
 * 196Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 115
 * 195.970481(13)
 * 1.84(3) h
 * β+
 * 196Hg
 * 2−
 * rowspan=2 style="text-indent:1em" | 196mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 394.2(5) keV
 * rowspan=2|1.41(2) h
 * β+ (95.5%)
 * 196Hg
 * rowspan=2|(7+)
 * rowspan=2|
 * rowspan=2|
 * IT (4.5%)
 * 196Tl
 * 197Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 116
 * 196.969575(18)
 * 2.84(4) h
 * β+
 * 197Hg
 * 1/2+
 * style="text-indent:1em" | 197mTl
 * colspan="3" style="text-indent:2em" | 608.22(8) keV
 * 540(10) ms
 * IT
 * 197Tl
 * 9/2−
 * 198Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 117
 * 197.97048(9)
 * 5.3(5) h
 * β+
 * 198Hg
 * 2−
 * rowspan=2 style="text-indent:1em" | 198m1Tl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 543.5(4) keV
 * rowspan=2|1.87(3) h
 * β+ (54%)
 * 198Hg
 * rowspan=2|7+
 * rowspan=2|
 * rowspan=2|
 * IT (46%)
 * 198Tl
 * style="text-indent:1em" | 198m2Tl
 * colspan="3" style="text-indent:2em" | 687.2(5) keV
 * 150(40) ns
 * (5+)
 * style="text-indent:1em" | 198m3Tl
 * colspan="3" style="text-indent:2em" | 742.3(4) keV
 * 32.1(10) ms
 * (10−)#
 * 199Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 118
 * 198.96988(3)
 * 7.42(8) h
 * β+
 * 199Hg
 * 1/2+
 * style="text-indent:1em" | 199mTl
 * colspan="3" style="text-indent:2em" | 749.7(3) keV
 * 28.4(2) ms
 * IT
 * 199Tl
 * 9/2−
 * 200Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 119
 * 199.970963(6)
 * 26.1(1) h
 * β+
 * 200Hg
 * 2−
 * style="text-indent:1em" | 200m1Tl
 * colspan="3" style="text-indent:2em" | 753.6(2) keV
 * 34.3(10) ms
 * IT
 * 200Tl
 * 7+
 * style="text-indent:1em" | 200m2Tl
 * colspan="3" style="text-indent:2em" | 762.0(2) keV
 * 0.33(5) μs
 * 5+
 * 201Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 120
 * 200.970819(16)
 * 72.912(17) h
 * EC
 * 201Hg
 * 1/2+
 * style="text-indent:1em" | 201mTl
 * colspan="3" style="text-indent:2em" | 919.50(9) keV
 * 2.035(7) ms
 * IT
 * 201Tl
 * (9/2−)
 * 202Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 121
 * 201.972106(16)
 * 12.23(2) d
 * β+
 * 202Hg
 * 2−
 * style="text-indent:1em" | 202mTl
 * colspan="3" style="text-indent:2em" | 950.19(10) keV
 * 572(7) μs
 * 7+
 * 203Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 122
 * 202.9723442(14)
 * colspan=3 align=center|Observationally Stable
 * 1/2+
 * 0.2952(1)
 * 0.29494–0.29528
 * style="text-indent:1em" | 203mTl
 * colspan="3" style="text-indent:2em" | 3400(300) keV
 * 7.7(5) μs
 * (25/2+)
 * rowspan=2|204Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 123
 * rowspan=2|203.9738635(13)
 * rowspan=2|3.78(2) y
 * β− (97.1%)
 * 204Pb
 * rowspan=2|2−
 * rowspan=2|
 * rowspan=2|
 * EC (2.9%)
 * 204Hg
 * style="text-indent:1em" | 204m1Tl
 * colspan="3" style="text-indent:2em" | 1104.0(4) keV
 * 63(2) μs
 * (7)+
 * style="text-indent:1em" | 204m2Tl
 * colspan="3" style="text-indent:2em" | 2500(500) keV
 * 2.6(2) μs
 * (12−)
 * style="text-indent:1em" | 204m3Tl
 * colspan="3" style="text-indent:2em" | 3500(500) keV
 * 1.6(2) μs
 * (20+)
 * 205Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 124
 * 204.9744275(14)
 * colspan=3 align=center|Observationally Stable
 * 1/2+
 * 0.7048(1)
 * 0.70472–0.70506
 * style="text-indent:1em" | 205m1Tl
 * colspan="3" style="text-indent:2em" | 3290.63(17) keV
 * 2.6(2) μs
 * 25/2+
 * style="text-indent:1em" | 205m2Tl
 * colspan="3" style="text-indent:2em" | 4835.6(15) keV
 * 235(10) ns
 * (35/2–)
 * 206Tl
 * Radium E''
 * style="text-align:right" | 81
 * style="text-align:right" | 125
 * 205.9761103(15)
 * 4.200(17) min
 * β−
 * 206Pb
 * 0−
 * Trace
 * style="text-indent:1em" | 206mTl
 * colspan="3" style="text-indent:2em" | 2643.11(19) keV
 * 3.74(3) min
 * IT
 * 206Tl
 * (12–)
 * 207Tl
 * Actinium C''
 * style="text-align:right" | 81
 * style="text-align:right" | 126
 * 206.977419(6)
 * 4.77(2) min
 * β−
 * 207Pb
 * 1/2+
 * Trace
 * rowspan=2 style="text-indent:1em" | 207mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 1348.1(3) keV
 * rowspan=2|1.33(11) s
 * IT (99.9%)
 * 207Tl
 * rowspan=2|11/2–
 * rowspan=2|
 * rowspan=2|
 * β− (.1%)
 * 207Pb
 * 208Tl
 * Thorium C"
 * style="text-align:right" | 81
 * style="text-align:right" | 127
 * 207.9820187(21)
 * 3.053(4) min
 * β−
 * 208Pb
 * 5+
 * Trace
 * 209Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 128
 * 208.985359(8)
 * 2.161(7) min
 * β−
 * 209Pb
 * 1/2+
 * Trace
 * rowspan=2|210Tl
 * rowspan=2|Radium C″
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 129
 * rowspan=2|209.990074(12)
 * rowspan=2|1.30(3) min
 * β− (99.991%)
 * 210Pb
 * rowspan=2|(5+)#
 * rowspan=2| Trace
 * rowspan=2|
 * β−, n (.009%)
 * 209Pb
 * rowspan=2|211Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|210.993480(50)
 * rowspan=2|80(16) s
 * β− (97.8%)
 * 211Pb
 * rowspan=2|1/2+
 * rowspan=2|
 * rowspan=2|
 * β−, n (2.2%)
 * 210Pb
 * rowspan=2|212Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 131
 * rowspan=2|211.998340(220)#
 * rowspan=2|31(8) s
 * β− (98.2%)
 * 212Pb
 * rowspan=2|(5+)
 * rowspan=2|
 * rowspan=2|
 * β−, n (1.8%)
 * 211Pb
 * rowspan=2|213Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 132
 * rowspan=2|213.001915(29)
 * rowspan=2|24(4) s
 * β− (92.4%)
 * 213Pb
 * rowspan=2|1/2+
 * rowspan=2|
 * rowspan=2|
 * β−, n (7.6%)
 * 212Pb
 * rowspan=2|214Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 133
 * rowspan=2|214.006940(210)#
 * rowspan=2|11(2) s
 * β− (66%)
 * 214Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (34%)
 * 213Pb
 * rowspan=2|215Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 134
 * rowspan=2|215.010640(320)#
 * rowspan=2|10(4) s
 * β− (95.4%)
 * 215Pb
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (4.6%)
 * 214Pb
 * rowspan=2|216Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 135
 * rowspan=2|216.015800(320)#
 * rowspan=2|6(3) s
 * β−
 * 216Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (<11.5%)
 * 215Pb
 * style="text-indent:1em" | 201mTl
 * colspan="3" style="text-indent:2em" | 919.50(9) keV
 * 2.035(7) ms
 * IT
 * 201Tl
 * (9/2−)
 * 202Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 121
 * 201.972106(16)
 * 12.23(2) d
 * β+
 * 202Hg
 * 2−
 * style="text-indent:1em" | 202mTl
 * colspan="3" style="text-indent:2em" | 950.19(10) keV
 * 572(7) μs
 * 7+
 * 203Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 122
 * 202.9723442(14)
 * colspan=3 align=center|Observationally Stable
 * 1/2+
 * 0.2952(1)
 * 0.29494–0.29528
 * style="text-indent:1em" | 203mTl
 * colspan="3" style="text-indent:2em" | 3400(300) keV
 * 7.7(5) μs
 * (25/2+)
 * rowspan=2|204Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 123
 * rowspan=2|203.9738635(13)
 * rowspan=2|3.78(2) y
 * β− (97.1%)
 * 204Pb
 * rowspan=2|2−
 * rowspan=2|
 * rowspan=2|
 * EC (2.9%)
 * 204Hg
 * style="text-indent:1em" | 204m1Tl
 * colspan="3" style="text-indent:2em" | 1104.0(4) keV
 * 63(2) μs
 * (7)+
 * style="text-indent:1em" | 204m2Tl
 * colspan="3" style="text-indent:2em" | 2500(500) keV
 * 2.6(2) μs
 * (12−)
 * style="text-indent:1em" | 204m3Tl
 * colspan="3" style="text-indent:2em" | 3500(500) keV
 * 1.6(2) μs
 * (20+)
 * 205Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 124
 * 204.9744275(14)
 * colspan=3 align=center|Observationally Stable
 * 1/2+
 * 0.7048(1)
 * 0.70472–0.70506
 * style="text-indent:1em" | 205m1Tl
 * colspan="3" style="text-indent:2em" | 3290.63(17) keV
 * 2.6(2) μs
 * 25/2+
 * style="text-indent:1em" | 205m2Tl
 * colspan="3" style="text-indent:2em" | 4835.6(15) keV
 * 235(10) ns
 * (35/2–)
 * 206Tl
 * Radium E''
 * style="text-align:right" | 81
 * style="text-align:right" | 125
 * 205.9761103(15)
 * 4.200(17) min
 * β−
 * 206Pb
 * 0−
 * Trace
 * style="text-indent:1em" | 206mTl
 * colspan="3" style="text-indent:2em" | 2643.11(19) keV
 * 3.74(3) min
 * IT
 * 206Tl
 * (12–)
 * 207Tl
 * Actinium C''
 * style="text-align:right" | 81
 * style="text-align:right" | 126
 * 206.977419(6)
 * 4.77(2) min
 * β−
 * 207Pb
 * 1/2+
 * Trace
 * rowspan=2 style="text-indent:1em" | 207mTl
 * rowspan=2|
 * rowspan=2 colspan="3" style="text-indent:2em" | 1348.1(3) keV
 * rowspan=2|1.33(11) s
 * IT (99.9%)
 * 207Tl
 * rowspan=2|11/2–
 * rowspan=2|
 * rowspan=2|
 * β− (.1%)
 * 207Pb
 * 208Tl
 * Thorium C"
 * style="text-align:right" | 81
 * style="text-align:right" | 127
 * 207.9820187(21)
 * 3.053(4) min
 * β−
 * 208Pb
 * 5+
 * Trace
 * 209Tl
 * style="text-align:right" | 81
 * style="text-align:right" | 128
 * 208.985359(8)
 * 2.161(7) min
 * β−
 * 209Pb
 * 1/2+
 * Trace
 * rowspan=2|210Tl
 * rowspan=2|Radium C″
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 129
 * rowspan=2|209.990074(12)
 * rowspan=2|1.30(3) min
 * β− (99.991%)
 * 210Pb
 * rowspan=2|(5+)#
 * rowspan=2| Trace
 * rowspan=2|
 * β−, n (.009%)
 * 209Pb
 * rowspan=2|211Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|210.993480(50)
 * rowspan=2|80(16) s
 * β− (97.8%)
 * 211Pb
 * rowspan=2|1/2+
 * rowspan=2|
 * rowspan=2|
 * β−, n (2.2%)
 * 210Pb
 * rowspan=2|212Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 131
 * rowspan=2|211.998340(220)#
 * rowspan=2|31(8) s
 * β− (98.2%)
 * 212Pb
 * rowspan=2|(5+)
 * rowspan=2|
 * rowspan=2|
 * β−, n (1.8%)
 * 211Pb
 * rowspan=2|213Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 132
 * rowspan=2|213.001915(29)
 * rowspan=2|24(4) s
 * β− (92.4%)
 * 213Pb
 * rowspan=2|1/2+
 * rowspan=2|
 * rowspan=2|
 * β−, n (7.6%)
 * 212Pb
 * rowspan=2|214Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 133
 * rowspan=2|214.006940(210)#
 * rowspan=2|11(2) s
 * β− (66%)
 * 214Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (34%)
 * 213Pb
 * rowspan=2|215Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 134
 * rowspan=2|215.010640(320)#
 * rowspan=2|10(4) s
 * β− (95.4%)
 * 215Pb
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (4.6%)
 * 214Pb
 * rowspan=2|216Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 135
 * rowspan=2|216.015800(320)#
 * rowspan=2|6(3) s
 * β−
 * 216Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (<11.5%)
 * 215Pb
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|210.993480(50)
 * rowspan=2|80(16) s
 * β− (97.8%)
 * 211Pb
 * rowspan=2|1/2+
 * rowspan=2|
 * rowspan=2|
 * β−, n (2.2%)
 * 210Pb
 * rowspan=2|212Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 131
 * rowspan=2|211.998340(220)#
 * rowspan=2|31(8) s
 * β− (98.2%)
 * 212Pb
 * rowspan=2|(5+)
 * rowspan=2|
 * rowspan=2|
 * β−, n (1.8%)
 * 211Pb
 * rowspan=2|213Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 132
 * rowspan=2|213.001915(29)
 * rowspan=2|24(4) s
 * β− (92.4%)
 * 213Pb
 * rowspan=2|1/2+
 * rowspan=2|
 * rowspan=2|
 * β−, n (7.6%)
 * 212Pb
 * rowspan=2|214Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 133
 * rowspan=2|214.006940(210)#
 * rowspan=2|11(2) s
 * β− (66%)
 * 214Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (34%)
 * 213Pb
 * rowspan=2|215Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 134
 * rowspan=2|215.010640(320)#
 * rowspan=2|10(4) s
 * β− (95.4%)
 * 215Pb
 * rowspan=2|1/2+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (4.6%)
 * 214Pb
 * rowspan=2|216Tl
 * rowspan=2|
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2 style="text-align:right" | 135
 * rowspan=2|216.015800(320)#
 * rowspan=2|6(3) s
 * β−
 * 216Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (<11.5%)
 * 215Pb
 * rowspan=2 style="text-align:right" | 135
 * rowspan=2|216.015800(320)#
 * rowspan=2|6(3) s
 * β−
 * 216Pb
 * rowspan=2|5+#
 * rowspan=2|
 * rowspan=2|
 * β−, n (<11.5%)
 * 215Pb
 * 215Pb

Thallium-201
Thallium-201 (201Tl) is a synthetic radioisotope of thallium. It has a half-life of 73 hours and decays by electron capture, emitting X-rays (~70–80 keV), and photons of 135 and 167 keV in 10% total abundance. Thallium-201 is synthesized by the neutron activation of stable thallium in a nuclear reactor, or by the 203Tl(p, 3n)201Pb nuclear reaction in cyclotrons, as 201Pb naturally decays to 201Tl afterwards. It is a radiopharmaceutical, as it has good imaging characteristics without excessive patient radiation dose. It is the most popular isotope used for thallium nuclear cardiac stress tests.

title: Isotopes of thallium


text:
Isotopes of mercury

There are seven stable isotopes of mercury (80Hg) with 202Hg being the most abundant (29.86%). The longest-lived radioisotopes are 194Hg with a half-life of 444 years, and 203Hg with a half-life of 46.612 days. Most of the remaining 40 radioisotopes have half-lives that are less than a day. 199Hg and 201Hg are the most often studied NMR-active nuclei, having spin quantum numbers of 1/2 and 3/2 respectively. All isotopes of mercury are either radioactive or observationally stable, meaning that they are predicted to be radioactive but no actual decay has been observed. These isotopes are predicted to undergo either alpha decay or double beta decay.

List of isotopes

 * 170Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 90
 * 80(+400-40) μs
 * α
 * 166Pt
 * 0+
 * 171Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 91
 * 171.00376(32)#
 * 80(30) μs [59(+36−16) μs]
 * α
 * 167Pt
 * 3/2−#
 * 172Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 92
 * 171.99883(22)
 * 420(240) μs [0.25(+35−9) ms]
 * α
 * 168Pt
 * 0+
 * 173Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 93
 * 172.99724(22)#
 * 1.1(4) ms [0.6(+5−2) ms]
 * α
 * 169Pt
 * 3/2−#
 * 174Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 94
 * 173.992864(21)
 * 2.0(4) ms [2.1(+18−7) ms]
 * α
 * 170Pt
 * 0+
 * 175Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 95
 * 174.99142(11)
 * 10.8(4) ms
 * α
 * 171Pt
 * 5/2−#
 * rowspan=2|176Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 96
 * rowspan=2|175.987355(15)
 * rowspan=2|20.4(15) ms
 * α (98.6%)
 * 172Pt
 * rowspan=2|0+
 * rowspan=2|
 * rowspan=2|
 * β+ (1.4%)
 * 176Au
 * rowspan=2|177Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 97
 * rowspan=2|176.98628(8)
 * rowspan=2|127.3(18) ms
 * α (85%)
 * 173Pt
 * rowspan=2|5/2−#
 * rowspan=2|
 * rowspan=2|
 * β+ (15%)
 * 177Au
 * rowspan=2|178Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 98
 * rowspan=2|177.982483(14)
 * rowspan=2|0.269(3) s
 * α (70%)
 * 174Pt
 * rowspan=2|0+
 * rowspan=2|
 * rowspan=2|
 * β+ (30%)
 * 178Au
 * rowspan=3|179Hg
 * rowspan=3 style="text-align:right" | 80
 * rowspan=3 style="text-align:right" | 99
 * rowspan=3|178.981834(29)
 * rowspan=3|1.09(4) s
 * α (53%)
 * 175Pt
 * rowspan=3|5/2−#
 * rowspan=3|
 * rowspan=3|
 * β+ (47%)
 * 179Au
 * β+, p (.15%)
 * 178Pt
 * rowspan=2|180Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 100
 * rowspan=2|179.978266(15)
 * rowspan=2|2.58(1) s
 * β+ (52%)
 * 180Au
 * rowspan=2|0+
 * rowspan=2|
 * rowspan=2|
 * α (48%)
 * 176Pt
 * rowspan=4|181Hg
 * rowspan=4 style="text-align:right" | 80
 * rowspan=4 style="text-align:right" | 101
 * rowspan=4|180.977819(17)
 * rowspan=4|3.6(1) s
 * β+ (64%)
 * 181Au
 * rowspan=4|1/2(−)
 * rowspan=4|
 * rowspan=4|
 * α (36%)
 * 177Pt
 * β+, p (.014%)
 * 180Pt
 * β+, α (9×10−6%)
 * 177Ir
 * style="text-indent:1em" | 181mHg
 * colspan="3" style="text-indent:2em" | 210(40)# keV
 * 13/2+
 * rowspan=3|182Hg
 * rowspan=3 style="text-align:right" | 80
 * rowspan=3 style="text-align:right" | 102
 * rowspan=3|181.97469(1)
 * rowspan=3|10.83(6) s
 * β+ (84.8%)
 * 182Au
 * rowspan=3|0+
 * rowspan=3|
 * rowspan=3|
 * α (15.2%)
 * 178Pt
 * β+, p (10−5%)
 * 181Pt
 * rowspan=3|183Hg
 * rowspan=3 style="text-align:right" | 80
 * rowspan=3 style="text-align:right" | 103
 * rowspan=3|182.974450(9)
 * rowspan=3|9.4(7) s
 * β+ (74.5%)
 * 183Au
 * rowspan=3|1/2−
 * rowspan=3|
 * rowspan=3|
 * α (25.5%)
 * 179Pt
 * β+, p (5.6×10−4%)
 * 182Pt
 * style="text-indent:1em" | 183m1Hg
 * colspan="3" style="text-indent:2em" | 198(14) keV
 * 13/2+#
 * style="text-indent:1em" | 183m2Hg
 * colspan="3" style="text-indent:2em" | 240(40)# keV
 * 5# s
 * β+
 * 183Au
 * 13/2+#
 * rowspan=2|184Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 104
 * rowspan=2|183.971713(11)
 * rowspan=2|30.6(3) s
 * β+ (98.89%)
 * 184Au
 * rowspan=2|0+
 * rowspan=2|
 * rowspan=2|
 * α (1.11%)
 * 180Pt
 * rowspan=2|185Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 105
 * rowspan=2|184.971899(17)
 * rowspan=2|49.1(10) s
 * β+ (94%)
 * 185Au
 * rowspan=2|1/2−
 * rowspan=2|
 * rowspan=2|
 * α (6%)
 * 181Pt
 * rowspan=3 style="text-indent:1em" | 185mHg
 * rowspan=3 colspan="3" style="text-indent:2em" | 99.3(5) keV
 * rowspan=3|21.6(15) s
 * IT (54%)
 * 185Hg
 * rowspan=3|13/2+
 * rowspan=3|
 * rowspan=3|
 * β+ (46%)
 * 185Au
 * α (.03%)
 * 181Pt
 * rowspan=2|186Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 106
 * rowspan=2|185.969362(12)
 * rowspan=2|1.38(6) min
 * β+ (99.92%)
 * 186Au
 * rowspan=2|0+
 * rowspan=2|
 * rowspan=2|
 * α (.016%)
 * 182Pt
 * style="text-indent:1em" | 186mHg
 * colspan="3" style="text-indent:2em" | 2217.3(4) keV
 * 82(5) μs
 * (8−)
 * rowspan=2|187Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 107
 * rowspan=2|186.969814(15)
 * rowspan=2|1.9(3) min
 * β+
 * 187Au
 * rowspan=2|3/2−
 * rowspan=2|
 * rowspan=2|
 * α (1.2×10−4%)
 * 183Pt
 * rowspan=2 style="text-indent:1em" | 187mHg
 * rowspan=2 colspan="3" style="text-indent:2em" | 59(16) keV
 * rowspan=2|2.4(3) min
 * β+
 * 187Au
 * rowspan=2|13/2+
 * rowspan=2|
 * rowspan=2|
 * α (2.5×10−4%)
 * 183Pt
 * rowspan=2|188Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 108
 * rowspan=2|187.967577(12)
 * rowspan=2|3.25(15) min
 * β+
 * 188Au
 * rowspan=2|0+
 * rowspan=2|
 * rowspan=2|
 * α (3.7×10−5%)
 * 184Pt
 * style="text-indent:1em" | 188mHg
 * colspan="3" style="text-indent:2em" | 2724.3(4) keV
 * 134(15) ns
 * (12+)
 * rowspan=2|189Hg
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2 style="text-align:right" | 109
 * rowspan=2|188.96819(4)
 * rowspan=2|7.6(1) min
 * β+
 * 189Au
 * rowspan=2|3/2−
 * rowspan=2|
 * rowspan=2|
 * α (3×10−5%)
 * 185Pt
 * rowspan=2 style="text-indent:1em" | 189mHg
 * rowspan=2 colspan="3" style="text-indent:2em" | 80(30) keV
 * rowspan=2|8.6(1) min
 * β+
 * 189Au
 * rowspan=2|13/2+
 * rowspan=2|
 * rowspan=2|
 * α (3×10−5%)
 * 185Pt
 * 190Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 110
 * 189.966322(17)
 * 20.0(5) min
 * β+
 * 190Au
 * 0+
 * 191Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 111
 * 190.967157(24)
 * 49(10) min
 * β+
 * 191Au
 * 3/2(−)
 * style="text-indent:1em" | 191mHg
 * colspan="3" style="text-indent:2em" | 128(22) keV
 * 50.8(15) min
 * β+
 * 191Au
 * 13/2+
 * 192Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 112
 * 191.965634(17)
 * 4.85(20) h
 * EC
 * 192Au
 * 0+
 * 193Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 113
 * 192.966665(17)
 * 3.80(15) h
 * β+
 * 193Au
 * 3/2−
 * rowspan=2 style="text-indent:1em" | 193mHg
 * rowspan=2 colspan="3" style="text-indent:2em" | 140.76(5) keV
 * rowspan=2|11.8(2) h
 * β+ (92.9%)
 * 193Au
 * rowspan=2|13/2+
 * rowspan=2|
 * rowspan=2|
 * IT (7.1%)
 * 193Hg
 * 194Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 114
 * 193.965439(13)
 * 444(77) y
 * EC
 * 194Au
 * 0+
 * 195Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 115
 * 194.966720(25)
 * 10.53(3) h
 * β+
 * 195Au
 * 1/2−
 * rowspan=2 style="text-indent:1em" | 195mHg
 * rowspan=2 colspan="3" style="text-indent:2em" | 176.07(4) keV
 * rowspan=2|41.6(8) h
 * IT (54.2%)
 * 195Hg
 * rowspan=2|13/2+
 * rowspan=2|
 * rowspan=2|
 * β+ (45.8%)
 * 195Au
 * 196Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 116
 * 195.965833(3)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.0015(1)
 * 197Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 117
 * 196.967213(3)
 * 64.14(5) h
 * EC
 * 197Au
 * 1/2−
 * rowspan=2 style="text-indent:1em" | 197mHg
 * rowspan=2 colspan="3" style="text-indent:2em" | 298.93(8) keV
 * rowspan=2|23.8(1) h
 * IT (91.4%)
 * 197Hg
 * rowspan=2|13/2+
 * rowspan=2|
 * rowspan=2|
 * EC (8.6%)
 * 197Au
 * 198Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 118
 * 197.9667690(4)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.0997(20)
 * 199Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 119
 * 198.9682799(4)
 * colspan=3 align=center|Observationally Stable
 * 1/2−
 * 0.1687(22)
 * style="text-indent:1em" | 199mHg
 * colspan="3" style="text-indent:2em" | 532.48(10) keV
 * 42.66(8) min
 * IT
 * 199Hg
 * 13/2+
 * 200Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 120
 * 199.9683260(4)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.2310(19)
 * 201Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 121
 * 200.9703023(6)
 * colspan=3 align=center|Observationally Stable
 * 3/2−
 * 0.1318(9)
 * style="text-indent:1em" | 201mHg
 * colspan="3" style="text-indent:2em" | 766.22(15) keV
 * 94(3) μs
 * 13/2+
 * 202Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 122
 * 201.9706430(6)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.2986(26)
 * 203Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 123
 * 202.9728725(18)
 * 46.595(6) d
 * β−
 * 203Tl
 * 5/2−
 * style="text-indent:1em" | 203mHg
 * colspan="3" style="text-indent:2em" | 933.14(23) keV
 * 24(4) μs
 * (13/2+)
 * 204Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 124
 * 203.9734939(4)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.0687(15)
 * 205Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 125
 * 204.976073(4)
 * 5.14(9) min
 * β−
 * 205Tl
 * 1/2−
 * style="text-indent:1em" | 205mHg
 * colspan="3" style="text-indent:2em" | 1556.40(17) keV
 * 1.09(4) ms
 * IT
 * 205Hg
 * 13/2+
 * 206Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 126
 * 205.977514(22)
 * 8.15(10) min
 * β−
 * 206Tl
 * 0+
 * Trace
 * 207Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 127
 * 206.98259(16)
 * 2.9(2) min
 * β−
 * 207Tl
 * (9/2+)
 * 208Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 128
 * 207.98594(32)#
 * 42(5) min [41(+5−4) min]
 * β−
 * 208Tl
 * 0+
 * 209Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 129
 * 208.99104(21)#
 * 37(8) s
 * 9/2+#
 * 210Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 130
 * 209.99451(32)#
 * 10# min [>300 ns]
 * 0+
 * 211Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 131
 * 210.99380(200)#
 * 26(8) s
 * 9/2+#
 * 212Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 132
 * 212.02760(300)#
 * 1# min [>300 ns]
 * 0+
 * 213Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 133
 * 213.07670(300)#
 * 1# s [>300 ns]
 * 5/2+#
 * 214Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 134
 * 214.11180(400)#
 * 1# s [>300 ns]
 * 0+
 * 215Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 135
 * 215.16210(400)#
 * 1# s [>300 ns]
 * 3/2+#
 * 216Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 136
 * 216.19860(400)#
 * 100# ms [>300 ns]
 * 0+
 * 201Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 121
 * 200.9703023(6)
 * colspan=3 align=center|Observationally Stable
 * 3/2−
 * 0.1318(9)
 * style="text-indent:1em" | 201mHg
 * colspan="3" style="text-indent:2em" | 766.22(15) keV
 * 94(3) μs
 * 13/2+
 * 202Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 122
 * 201.9706430(6)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.2986(26)
 * 203Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 123
 * 202.9728725(18)
 * 46.595(6) d
 * β−
 * 203Tl
 * 5/2−
 * style="text-indent:1em" | 203mHg
 * colspan="3" style="text-indent:2em" | 933.14(23) keV
 * 24(4) μs
 * (13/2+)
 * 204Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 124
 * 203.9734939(4)
 * colspan=3 align=center|Observationally Stable
 * 0+
 * 0.0687(15)
 * 205Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 125
 * 204.976073(4)
 * 5.14(9) min
 * β−
 * 205Tl
 * 1/2−
 * style="text-indent:1em" | 205mHg
 * colspan="3" style="text-indent:2em" | 1556.40(17) keV
 * 1.09(4) ms
 * IT
 * 205Hg
 * 13/2+
 * 206Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 126
 * 205.977514(22)
 * 8.15(10) min
 * β−
 * 206Tl
 * 0+
 * Trace
 * 207Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 127
 * 206.98259(16)
 * 2.9(2) min
 * β−
 * 207Tl
 * (9/2+)
 * 208Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 128
 * 207.98594(32)#
 * 42(5) min [41(+5−4) min]
 * β−
 * 208Tl
 * 0+
 * 209Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 129
 * 208.99104(21)#
 * 37(8) s
 * 9/2+#
 * 210Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 130
 * 209.99451(32)#
 * 10# min [>300 ns]
 * 0+
 * 211Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 131
 * 210.99380(200)#
 * 26(8) s
 * 9/2+#
 * 212Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 132
 * 212.02760(300)#
 * 1# min [>300 ns]
 * 0+
 * 213Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 133
 * 213.07670(300)#
 * 1# s [>300 ns]
 * 5/2+#
 * 214Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 134
 * 214.11180(400)#
 * 1# s [>300 ns]
 * 0+
 * 215Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 135
 * 215.16210(400)#
 * 1# s [>300 ns]
 * 3/2+#
 * 216Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 136
 * 216.19860(400)#
 * 100# ms [>300 ns]
 * 0+
 * style="text-align:right" | 130
 * 209.99451(32)#
 * 10# min [>300 ns]
 * 0+
 * 211Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 131
 * 210.99380(200)#
 * 26(8) s
 * 9/2+#
 * 212Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 132
 * 212.02760(300)#
 * 1# min [>300 ns]
 * 0+
 * 213Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 133
 * 213.07670(300)#
 * 1# s [>300 ns]
 * 5/2+#
 * 214Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 134
 * 214.11180(400)#
 * 1# s [>300 ns]
 * 0+
 * 215Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 135
 * 215.16210(400)#
 * 1# s [>300 ns]
 * 3/2+#
 * 216Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 136
 * 216.19860(400)#
 * 100# ms [>300 ns]
 * 0+
 * 214Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 134
 * 214.11180(400)#
 * 1# s [>300 ns]
 * 0+
 * 215Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 135
 * 215.16210(400)#
 * 1# s [>300 ns]
 * 3/2+#
 * 216Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 136
 * 216.19860(400)#
 * 100# ms [>300 ns]
 * 0+
 * 3/2+#
 * 216Hg
 * style="text-align:right" | 80
 * style="text-align:right" | 136
 * 216.19860(400)#
 * 100# ms [>300 ns]
 * 0+
 * style="text-align:right" | 80
 * style="text-align:right" | 136
 * 216.19860(400)#
 * 100# ms [>300 ns]
 * 0+
 * 0+
 * 0+

title: Isotopes of mercury


text:
Isotopes of gold

Gold (79Au) has one stable isotope, 197Au, and 40 radioisotopes, with 195Au being the most stable with a half-life of 186 days. Gold is currently considered the heaviest monoisotopic element. Bismuth formerly held that distinction until alpha-decay of the 209Bi isotope was observed. All isotopes of gold are either radioactive or, in the case of 197Au, observationally stable, meaning that 197Au is predicted to be radioactive but no actual decay has been observed.

List of isotopes

 * rowspan=2|170Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 91
 * rowspan=2|169.99602(22)#
 * rowspan=2|$286 μs$
 * p (89%)
 * 169Pt
 * rowspan=2|(2)−
 * rowspan=2|
 * α (11%)
 * 166Ir
 * rowspan=2 style="text-indent:1em" | 170mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 282(10) keV
 * rowspan=2| $617 μs$
 * p (58%)
 * 169Pt
 * rowspan=2|(9)+
 * rowspan=2|
 * α (42%)
 * 166mIr
 * rowspan=2|171Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 92
 * rowspan=2|170.991882(22)
 * rowspan=2|$22 μs$
 * p
 * 170Pt
 * rowspan=2|1/2+
 * rowspan=2|
 * α?
 * 167Ir
 * rowspan=2 style="text-indent:1em" | 171mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 258(13) keV
 * rowspan=2|1.09(3) ms
 * α (66%)
 * 167mIr
 * rowspan=2|11/2−
 * rowspan=2|
 * p (34%)
 * 170Pt
 * rowspan=3|172Au
 * rowspan=3 style="text-align:right" | 79
 * rowspan=3 style="text-align:right" | 93
 * rowspan=3|171.99000(6)
 * rowspan=3|28(4) ms
 * α (98%)
 * 168Ir
 * rowspan=3|(2)−
 * rowspan=3|
 * p (2%)
 * 171Pt
 * β+
 * 172Pt
 * rowspan=2 style="text-indent:1em" | 172mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 160(250) keV
 * rowspan=2|11.0(10) ms
 * α
 * 168Ir
 * rowspan=2|(9,10)+
 * rowspan=2|
 * p?
 * 171Pt
 * rowspan=2|173Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 94
 * rowspan=2|172.986224(24)
 * rowspan=2|25.5(8) ms
 * α (86%)
 * 169Ir
 * rowspan=2|(1/2+)
 * rowspan=2|
 * β+ (14%)
 * 173Pt
 * rowspan=2 style="text-indent:1em" | 173mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 214(21) keV
 * rowspan=2|12.2(1) ms
 * α (89%)
 * 169Ir
 * rowspan=2|(11/2−)
 * rowspan=2|
 * β+ (11%)
 * 173Pt
 * rowspan=2|174Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 95
 * rowspan=2|173.98491(11)#
 * rowspan=2|139(3) ms
 * α (90%)
 * 170Ir
 * rowspan=2|(3−)
 * rowspan=2|
 * β+ (10%)
 * 174Pt
 * rowspan=2 style="text-indent:1em" | 174mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 130(50)# keV
 * rowspan=2|162(2) ms
 * α?
 * 170Ir
 * rowspan=2|(9+)
 * rowspan=2|
 * β+?
 * 174Pt
 * rowspan=2|175Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 96
 * rowspan=2|174.98132(4)
 * rowspan=2|200(3) ms
 * α (88%)
 * 171Ir
 * rowspan=2|1/2+
 * rowspan=2|
 * β+ (12%)
 * 175Pt
 * rowspan=2 style="text-indent:1em" | 175mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 164(11)# keV
 * rowspan=2|136(1) ms
 * α (75%)
 * 171Ir
 * rowspan=2|(11/2−)
 * rowspan=2|
 * β+ (25%)
 * 175Pt
 * rowspan=2|176Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 97
 * rowspan=2|175.98012(4)
 * rowspan=2|1.05(1) s
 * α (75%)
 * 172Ir
 * rowspan=2|(3−,4−)
 * rowspan=2|
 * β+ (25%)
 * 176Pt
 * rowspan=2 style="text-indent:1em" | 176mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 139(13) keV
 * rowspan=2|1.36(2) s
 * α?
 * 172Ir
 * rowspan=2|(8+,9+)
 * rowspan=2|
 * β+?
 * 176Pt
 * rowspan=2|177Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 98
 * rowspan=2|176.976870(11)
 * rowspan=2|1.501(20) s
 * β+ (60%)
 * 177Pt
 * rowspan=2|1/2+
 * rowspan=2|
 * α (40%)
 * 173Ir
 * rowspan=2 style="text-indent:1em" | 177mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 190(7) keV
 * rowspan=2|1.193(13) s
 * α (60%)
 * 173Ir
 * rowspan=2|11/2−
 * rowspan=2|
 * β+ (40%)
 * 177Pt
 * rowspan=2|178Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 99
 * rowspan=2|177.976057(11)
 * rowspan=2|3.4(5) s
 * β+ (84%)
 * 178Pt
 * rowspan=2|(2+,3−)
 * rowspan=2|
 * α (16%)
 * 174Ir
 * style="text-indent:1em" | 178m1Au
 * colspan="3" style="text-indent:2em" | 50.3(2) keV
 * 300(10) ns
 * IT
 * 178Au
 * (4−,5+)
 * rowspan=2 style="text-indent:1em" | 178m2Au
 * rowspan=2 colspan="3" style="text-indent:2em" | 186(14) keV
 * rowspan=2|2.7(5) s
 * β+ (82%)
 * 178Pt
 * rowspan=2|(7+,8−)
 * rowspan=2|
 * α (18%)
 * 174Ir
 * style="text-indent:1em" | 178m3Au
 * colspan="3" style="text-indent:2em" | 243(14) keV
 * 390(10) ns
 * IT
 * 178Au
 * (5+,6)
 * rowspan=2|179Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 100
 * rowspan=2|178.973174(13)
 * rowspan=2|7.1(3) s
 * β+ (78.0%)
 * 179Pt
 * rowspan=2|1/2+
 * rowspan=2|
 * α (22.0%)
 * 175Ir
 * style="text-indent:1em" | 179mAu
 * colspan="3" style="text-indent:2em" | 89.5(3) keV
 * 327(5) ns
 * IT
 * 179Au
 * (3/2−)
 * rowspan=2|180Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 101
 * rowspan=2|179.9724898(51)
 * rowspan=2|7.9(3) s
 * β+ (99.42%)
 * 180Pt
 * rowspan=2|(1+)
 * rowspan=2|
 * α (0.58%)
 * 176Ir
 * rowspan=2|181Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 102
 * rowspan=2|180.970079(21)
 * rowspan=2|13.7(14) s
 * β+ (97.3%)
 * 181Pt
 * rowspan=2|(5/2−)
 * rowspan=2|
 * α (2.7%)
 * 177Ir
 * rowspan=2|182Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 103
 * rowspan=2|181.969614(20)
 * rowspan=2|15.5(4) s
 * β+ (99.87%)
 * 182Pt
 * rowspan=2|(2+)
 * rowspan=2|
 * α (0.13%)
 * 178Ir
 * rowspan=2|183Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 104
 * rowspan=2|182.967588(10)
 * rowspan=2|42.8(10) s
 * β+ (99.45%)
 * 183Pt
 * rowspan=2|5/2−
 * rowspan=2|
 * α (0.55%)
 * 179Ir
 * style="text-indent:1em" | 183mAu
 * colspan="3" style="text-indent:2em" | 73.10(1) keV
 * >1 μs
 * IT
 * 183Au
 * (1/2)+
 * rowspan=2|184Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 105
 * rowspan=2|183.967452(24)
 * rowspan=2|20.6(9) s
 * β+ (99.99%)
 * 184Pt
 * rowspan=2|5+
 * rowspan=2|
 * α (0.013%)
 * 180Ir
 * rowspan=3 style="text-indent:1em" | 184mAu
 * rowspan=3 colspan="3" style="text-indent:2em" | 68.46(4) keV
 * rowspan=3|47.6(14) s
 * β+ (70%)
 * 184Pt
 * rowspan=3|2+
 * rowspan=3|
 * IT (30%)
 * 184Au
 * α (0.013%)
 * 180Ir
 * rowspan=2|185Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 106
 * rowspan=2|184.9657989(28)
 * rowspan=2|4.25(6) min
 * β+ (99.74%)
 * 185Pt
 * rowspan=2|5/2−
 * rowspan=2|
 * α (0.26%)
 * 181Ir
 * rowspan=2 style="text-indent:1em" | 185mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 50(50)# keV
 * rowspan=2|6.8(3) min
 * β+
 * 185Pt
 * rowspan=2|1/2+#
 * rowspan=2|
 * IT?
 * 185Au
 * rowspan=2|186Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 107
 * rowspan=2|185.965953(23)
 * rowspan=2|10.7(5) min
 * β+
 * 186Pt
 * rowspan=2|3−
 * rowspan=2|
 * α (8×10−4%)
 * 182Ir
 * style="text-indent:1em" | 186mAu
 * colspan="3" style="text-indent:2em" | 227.77(7) keV
 * 110(10) ns
 * IT
 * 186Au
 * 2+
 * rowspan=2|187Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 108
 * rowspan=2|186.964542(24)
 * rowspan=2|8.3(2) min
 * β+
 * 187Pt
 * rowspan=2|1/2+
 * rowspan=2|
 * α?
 * 183Ir
 * style="text-indent:1em" | 187mAu
 * colspan="3" style="text-indent:2em" | 120.33(14) keV
 * 2.3(1) s
 * IT
 * 187Au
 * 9/2−
 * 188Au
 * style="text-align:right" | 79
 * style="text-align:right" | 109
 * 187.9652480(29)
 * 8.84(6) min
 * β+
 * 188Pt
 * 1−
 * rowspan=2|189Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 110
 * rowspan=2|188.963948(22)
 * rowspan=2|28.7(4) min
 * β+
 * 189Pt
 * rowspan=2|1/2+
 * rowspan=2|
 * α? (<3×10−5%)
 * 185Ir
 * rowspan=2 style="text-indent:1em" | 189m1Au
 * rowspan=2 colspan="3" style="text-indent:2em" | 247.25(16) keV
 * rowspan=2|4.59(11) min
 * β+
 * 189Pt
 * rowspan=2|11/2−
 * rowspan=2|
 * IT?
 * 189Au
 * style="text-indent:1em" | 189m2Au
 * colspan="3" style="text-indent:2em" | 325.12(16) keV
 * 190(15) ns
 * IT
 * 189Au
 * 9/2−
 * style="text-indent:1em" | 189m3Au
 * colspan="3" style="text-indent:2em" | 2554.8(8) keV
 * 242(10) ns
 * IT
 * 189Au
 * 31/2+
 * rowspan=2|190Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 111
 * rowspan=2|189.964752(4)
 * rowspan=2|42.8(10) min
 * β+
 * 190Pt
 * rowspan=2|1−
 * rowspan=2|
 * α? (<10−6%)
 * 186Ir
 * rowspan=2 style="text-indent:1em" | 190mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 200(150)# keV
 * rowspan=2|125(20) ms
 * IT
 * 190Au
 * rowspan=2|11−#
 * rowspan=2|
 * β+?
 * 190Pt
 * 191Au
 * style="text-align:right" | 79
 * style="text-align:right" | 112
 * 190.963716(5)
 * 3.18(8) h
 * β+
 * 191Pt
 * 3/2+
 * style="text-indent:1em" | 191m1Au
 * colspan="3" style="text-indent:2em" | 266.2(7) keV
 * 920(110) ms
 * IT
 * 191Au
 * 11/2−
 * style="text-indent:1em" | 191m2Au
 * colspan="3" style="text-indent:2em" | 2489.6(9) keV
 * 402(20) ns
 * IT
 * 191Au
 * 31/2+
 * 192Au
 * style="text-align:right" | 79
 * style="text-align:right" | 113
 * 191.964818(17)
 * 4.94(9) h
 * β+
 * 192Pt
 * 1−
 * style="text-indent:1em" | 192m1Au
 * colspan="3" style="text-indent:2em" | 135.41(25) keV
 * 29 ms
 * IT
 * 192Au
 * 5+
 * style="text-indent:1em" | 192m2Au
 * colspan="3" style="text-indent:2em" | 431.6(5) keV
 * 160(20) ms
 * IT
 * 192Au
 * 11−
 * 193Au
 * style="text-align:right" | 79
 * style="text-align:right" | 114
 * 192.964138(9)
 * 17.65(15) h
 * β+
 * 193Pt
 * 3/2+
 * rowspan=2 style="text-indent:1em" | 193m1Au
 * rowspan=2 colspan="3" style="text-indent:2em" | 290.20(4) keV
 * rowspan=2|3.9(3) s
 * IT (99.97%)
 * 193Au
 * rowspan=2|11/2−
 * rowspan=2|
 * β+ (0.03%)
 * 193Pt
 * style="text-indent:1em" | 193m2Au
 * colspan="3" style="text-indent:2em" | 2486.7(6) keV
 * 150(50) ns
 * IT
 * 193Au
 * 31/2+
 * 194Au
 * style="text-align:right" | 79
 * style="text-align:right" | 115
 * 193.9654191(23)
 * 38.02(10) h
 * β+
 * 194Pt
 * 1−
 * style="text-indent:1em" | 194m1Au
 * colspan="3" style="text-indent:2em" | 107.4(5) keV
 * 600(8) ms
 * IT
 * 194Au
 * 5+
 * style="text-indent:1em" | 194m2Au
 * colspan="3" style="text-indent:2em" | 475.8(6) keV
 * 420(10) ms
 * IT
 * 194Au
 * 11−
 * 195Au
 * style="text-align:right" | 79
 * style="text-align:right" | 116
 * 194.9650378(12)
 * 186.01(6) d
 * EC
 * 195Pt
 * 3/2+
 * style="text-indent:1em" | 195m1Au
 * colspan="3" style="text-indent:2em" | 318.58(4) keV
 * 30.5(2) s
 * IT
 * 195Au
 * 11/2−
 * style="text-indent:1em" | 195m2Au
 * colspan="3" style="text-indent:2em" | 2501(20)# keV
 * 12.89(21) μs
 * IT
 * 195Au
 * 31/2(−)
 * rowspan=2|196Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 117
 * rowspan=2|195.966571(3)
 * rowspan=2|6.165(11) d
 * β+ (93.0%)
 * 196Pt
 * rowspan=2|2−
 * rowspan=2|
 * β− (7.0%)
 * 196Hg
 * style="text-indent:1em" | 196m1Au
 * colspan="3" style="text-indent:2em" | 84.656(20) keV
 * 8.1(2) s
 * IT
 * 196Au
 * 5+
 * style="text-indent:1em" | 196m2Au
 * colspan="3" style="text-indent:2em" | 595.66(4) keV
 * 9.603(22) h
 * IT
 * 196Au
 * 12−
 * 197Au
 * style="text-align:right" | 79
 * style="text-align:right" | 118
 * 196.9665701(6)
 * colspan=3 align=center|Observationally Stable
 * 3/2+
 * 1.0000
 * style="text-indent:1em" | 197m1Au
 * colspan="3" style="text-indent:2em" | 409.15(8) keV
 * 7.73(6) s
 * IT
 * 197Au
 * 11/2−
 * style="text-indent:1em" | 197m2Au
 * colspan="3" style="text-indent:2em" | 2532.5(10) keV
 * 150(5) ns
 * IT
 * 197Au
 * 27/2+#
 * 198Au
 * style="text-align:right" | 79
 * style="text-align:right" | 119
 * 197.9682437(6)
 * 2.69464(14) d
 * β−
 * 198Hg
 * 2−
 * style="text-indent:1em" | 198m1Au
 * colspan="3" style="text-indent:2em" | 312.2227(20) keV
 * 124(4) ns
 * IT
 * 198Au
 * 5+
 * style="text-indent:1em" | 198m2Au
 * colspan="3" style="text-indent:2em" | 811.9(15) keV
 * 2.272(16) d
 * IT
 * 198Au
 * 12−
 * 199Au
 * style="text-align:right" | 79
 * style="text-align:right" | 120
 * 198.9687666(6)
 * 3.139(7) d
 * β−
 * 199Hg
 * 3/2+
 * style="text-indent:1em" | 199mAu
 * colspan="3" style="text-indent:2em" | 548.9405(21) keV
 * 440(30) μs
 * IT
 * 199Au
 * 11/2−
 * 200Au
 * style="text-align:right" | 79
 * style="text-align:right" | 121
 * 199.970757(29)
 * 48.4(3) min
 * β−
 * 200Hg
 * (1−)
 * rowspan=2 style="text-indent:1em" | 200mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 1010(40) keV
 * rowspan=2|18.7(5) h
 * β− (84%)
 * 200Hg
 * rowspan=2|12−
 * rowspan=2|
 * IT (16%)
 * 200Au
 * 201Au
 * style="text-align:right" | 79
 * style="text-align:right" | 122
 * 200.971658(3)
 * 26.0(8) min
 * β−
 * 201Hg
 * 3/2+
 * style="text-indent:1em" | 201m1Au
 * colspan="3" style="text-indent:2em" | 594(5) keV
 * 730(630) μs
 * IT
 * 201Au
 * 11/2-
 * style="text-indent:1em" | 201m2Au
 * colspan="3" style="text-indent:2em" | 1610(5) keV
 * 5.6(24) μs
 * IT
 * 201Au
 * 19/2+#
 * 202Au
 * style="text-align:right" | 79
 * style="text-align:right" | 123
 * 201.973856(25)
 * 28.4(12) s
 * β−
 * 202Hg
 * (1−)
 * 203Au
 * style="text-align:right" | 79
 * style="text-align:right" | 124
 * 202.9751545(33)
 * 60(6) s
 * β−
 * 203Hg
 * 3/2+
 * style="text-indent:1em" | 203mAu
 * colspan="3" style="text-indent:2em" | 641(3) keV
 * 140(44) μs
 * IT
 * 203Au
 * 11/2−#
 * 204Au
 * style="text-align:right" | 79
 * style="text-align:right" | 125
 * 203.97811(22)#
 * 38.3(13) s
 * β−
 * 204Hg
 * (2−)
 * style="text-indent:1em" | 204mAu
 * colspan="3" style="text-indent:2em" | 3816(500)# keV
 * 2.1(3) μs
 * IT
 * 204Au
 * 16+#
 * 205Au
 * style="text-align:right" | 79
 * style="text-align:right" | 126
 * 204.98006(22)#
 * 32.0(14) s
 * β−
 * 205Hg
 * 3/2+#
 * rowspan=2 style="text-indent:1em" | 205m1Au
 * rowspan=2 colspan="3" style="text-indent:2em" | 907(5) keV
 * rowspan=2|6(2) s
 * IT?
 * 205Au
 * rowspan=2|11/2−#
 * rowspan=2|
 * β−?
 * 205Hg
 * style="text-indent:1em" | 205m2Au
 * colspan="3" style="text-indent:2em" | 2849.7(4) keV
 * 163(5) ns
 * IT
 * 205Au
 * 19/2+#
 * 206Au
 * style="text-align:right" | 79
 * style="text-align:right" | 127
 * 205.98477(32)#
 * 47(11) s
 * β−
 * 206Hg
 * 6+#
 * rowspan=2|207Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 128
 * rowspan=2|206.98858(32)#
 * rowspan=2|3# s [>300 ns]
 * β−?
 * 207Hg
 * rowspan=2|3/2+#
 * rowspan=2|
 * β−, n?
 * 206Hg
 * rowspan=2|208Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 129
 * rowspan=2|207.99366(32)#
 * rowspan=2|20# s [>300 ns]
 * β−?
 * 208Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 207Hg
 * rowspan=2|209Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|208.99761(43)#
 * rowspan=2|1# s [>300 ns]
 * β−?
 * 209Hg
 * rowspan=2|3/2+#
 * rowspan=2|
 * β−, n?
 * 210Hg
 * rowspan=2|210Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 131
 * rowspan=2|210.00288(43)#
 * rowspan=2|10# s [>300 ns]
 * β−?
 * 210Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 209Hg
 * rowspan=2 style="text-indent:1em" | 200mAu
 * rowspan=2 colspan="3" style="text-indent:2em" | 1010(40) keV
 * rowspan=2|18.7(5) h
 * β− (84%)
 * 200Hg
 * rowspan=2|12−
 * rowspan=2|
 * IT (16%)
 * 200Au
 * 201Au
 * style="text-align:right" | 79
 * style="text-align:right" | 122
 * 200.971658(3)
 * 26.0(8) min
 * β−
 * 201Hg
 * 3/2+
 * style="text-indent:1em" | 201m1Au
 * colspan="3" style="text-indent:2em" | 594(5) keV
 * 730(630) μs
 * IT
 * 201Au
 * 11/2-
 * style="text-indent:1em" | 201m2Au
 * colspan="3" style="text-indent:2em" | 1610(5) keV
 * 5.6(24) μs
 * IT
 * 201Au
 * 19/2+#
 * 202Au
 * style="text-align:right" | 79
 * style="text-align:right" | 123
 * 201.973856(25)
 * 28.4(12) s
 * β−
 * 202Hg
 * (1−)
 * 203Au
 * style="text-align:right" | 79
 * style="text-align:right" | 124
 * 202.9751545(33)
 * 60(6) s
 * β−
 * 203Hg
 * 3/2+
 * style="text-indent:1em" | 203mAu
 * colspan="3" style="text-indent:2em" | 641(3) keV
 * 140(44) μs
 * IT
 * 203Au
 * 11/2−#
 * 204Au
 * style="text-align:right" | 79
 * style="text-align:right" | 125
 * 203.97811(22)#
 * 38.3(13) s
 * β−
 * 204Hg
 * (2−)
 * style="text-indent:1em" | 204mAu
 * colspan="3" style="text-indent:2em" | 3816(500)# keV
 * 2.1(3) μs
 * IT
 * 204Au
 * 16+#
 * 205Au
 * style="text-align:right" | 79
 * style="text-align:right" | 126
 * 204.98006(22)#
 * 32.0(14) s
 * β−
 * 205Hg
 * 3/2+#
 * rowspan=2 style="text-indent:1em" | 205m1Au
 * rowspan=2 colspan="3" style="text-indent:2em" | 907(5) keV
 * rowspan=2|6(2) s
 * IT?
 * 205Au
 * rowspan=2|11/2−#
 * rowspan=2|
 * β−?
 * 205Hg
 * style="text-indent:1em" | 205m2Au
 * colspan="3" style="text-indent:2em" | 2849.7(4) keV
 * 163(5) ns
 * IT
 * 205Au
 * 19/2+#
 * 206Au
 * style="text-align:right" | 79
 * style="text-align:right" | 127
 * 205.98477(32)#
 * 47(11) s
 * β−
 * 206Hg
 * 6+#
 * rowspan=2|207Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 128
 * rowspan=2|206.98858(32)#
 * rowspan=2|3# s [>300 ns]
 * β−?
 * 207Hg
 * rowspan=2|3/2+#
 * rowspan=2|
 * β−, n?
 * 206Hg
 * rowspan=2|208Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 129
 * rowspan=2|207.99366(32)#
 * rowspan=2|20# s [>300 ns]
 * β−?
 * 208Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 207Hg
 * rowspan=2|209Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|208.99761(43)#
 * rowspan=2|1# s [>300 ns]
 * β−?
 * 209Hg
 * rowspan=2|3/2+#
 * rowspan=2|
 * β−, n?
 * 210Hg
 * rowspan=2|210Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 131
 * rowspan=2|210.00288(43)#
 * rowspan=2|10# s [>300 ns]
 * β−?
 * 210Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 209Hg
 * β−?
 * 208Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 207Hg
 * rowspan=2|209Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 130
 * rowspan=2|208.99761(43)#
 * rowspan=2|1# s [>300 ns]
 * β−?
 * 209Hg
 * rowspan=2|3/2+#
 * rowspan=2|
 * β−, n?
 * 210Hg
 * rowspan=2|210Au
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2 style="text-align:right" | 131
 * rowspan=2|210.00288(43)#
 * rowspan=2|10# s [>300 ns]
 * β−?
 * 210Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 209Hg
 * rowspan=2|6+#
 * rowspan=2|
 * β−, n?
 * 209Hg
 * 209Hg

title: Isotopes of gold


text:
Dirk Wellham

Dirk MacDonald Wellham (born 13 March 1959) is a former Australian cricketer who played in six Test matches and 17 One Day Internationals (ODIs) between 1981 and 1987. He is one of three players to score a century in both his first class and Test debuts. He was the first player to captain three Australian states having captained New South Wales, Tasmania and Queensland during his career. As NSW captain, he won the Sheffield Shield in 1984–85 and 1985–86 and the McDonald's Cup in 1984–85.He is the nephew of New South Wales first-class cricketer Walter Wellham.

Early life
Welham was born in Marrickville, New South Wales and attended Ashfield Boys High School.

Career
After scoring two centuries for New South Wales in the 1980–81 Sheffield Shield, including 100 against Victoria on his first-class debut, Wellham was selected for the Australian team to tour England in 1981. On tour, Wellham scored 135 not out against Northamptonshire and was chosen to make his Test debut in the sixth Test at The Oval.

Wellham scored 24 and 103, thus becoming the 12th Australian batsman to score a century on Test debut. Wellham's century was criticised by some commentators for being too slow and costing Australia a chance of victory. After scoring his first 80 runs in under 90 balls, Kim Hughes sent a runner onto the field to tell Wellham to take his time as the series had already been lost and the result didn't matter. Wellham's 103 took 221 balls and he was on 99 for 25 minutes.

He was dropped from both the Test and state teams in the next season, but returned in 1983–84 as captain of New South Wales, winning the first of two consecutive Sheffield Shields that year and a McDonald's Cup in 1984–85. Wellham was recalled to the Australian team for the final Test of the 1985 Ashes tour and again for the final Test of the 1986–87 Ashes series scoring just 36 runs in these two matches. Wellham played 9 of his 17 one day international matches in the 1986–87 World Series Cup, the highlight being 97 against England at Sydney in a match more famous for batsman Allan Lamb hitting Bruce Reid for 18 runs in the final over to win the match.

At first-class level, Wellham scored 8662 runs at an average of 42.25 and scored 16 centuries. In 1987–88, Wellham moved to Tasmania for the 1988–89 season and captained the side for three seasons. In 32 matches for Tasmania, Wellham scored 1629 runs at an average of 39.73 scoring 15 fifties but no centuries.

At the start of the 1991–92 season, Wellham moved to Brisbane to take up a teaching position with the Anglican Church Grammar School. He joined the Eastern Suburbs club and was selected for Queensland. Wellham scored 873 runs at 58.20 including two centuries, his best run-scoring season since 1982–83.

On 11 December 1992, Wellham captained Queensland for the first time, thus becoming the first player to captain three Australian states. He captained Queensland in 8 first-class matches that season including their loss to NSW in the Sheffield Shield final. Wellham played three more matches for Queensland in 1993–94 before retiring from first-class cricket.

Controversy
During a first class match between Victoria and New South Wales in 1986, Wellham was involved in an incident at the Junction Oval in Melbourne when, after discussing with the Victorian Coach and on the way out to bat after lunch, that the coach should not stand next to the sight-screen during an over, he swiped his bat at the players gate. A piece of the gate broke off and injured a bystander. Wellham apologised for the incident.

Character
Wellham had a reputation as an astute captain, having led NSW to consecutive Sheffield Shield titles in the 1980s.

Post-cricket career
Wellham previously served as Deputy Principal (Academic) at Anglican Church Grammar School. He has been appointed as Principal of Caloundra City Private School, commencing 2013. He received a PhD from Deakin University in 2009.

title: Dirk Wellham