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