Isotopes of gold

Gold (₇₉Au) has one stable isotope, ¹⁹⁷Au, and known radioisotopes ranging from ¹⁶⁹Au to ²¹⁰Au, with ¹⁹⁵Au being the most stable with a half-life of 186.01 days, followed by ¹⁹⁶Au at 6.165 days. Isotopes heavier than the stable mass number 197 generally decay by beta emission to mercury isotopes, while those lighter decay by electron capture to platinum isotopes or alpha emission to iridium isotopes; 196 decays both to platinum and to mercury. Of the meta states the most stable is ^198m2Au at 2.27 days.

Gold is currently the heaviest monoisotopic element (and is also mononuclidic). 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

|-id=Gold-169 | rowspan=2|¹⁶⁹Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 90 | rowspan=2| 168.99808(32)# | rowspan=2 data-sort-value="1.16e-6"| | p (~94%) | ¹⁶⁸Pt | rowspan=2|(11/2−) | rowspan=2| |- | α (~6%) | ^165mIr |-id=Gold-170 | rowspan=2|¹⁷⁰Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 91 | rowspan=2|169.99602(22)# | rowspan=2 data-sort-value="286.0e-6"| | p (89%) | ¹⁶⁹Pt | rowspan=2|(2)− | rowspan=2| |- | α (11%) | ¹⁶⁶Ir |-id=Gold-170m | rowspan=2 style="text-indent:1em" | ^170mAu | rowspan=2 colspan="3" style="text-indent:2em" | 282(10) keV | rowspan=2 data-sort-value="617.0e-6"| | p (58%) | ¹⁶⁹Pt | rowspan=2|(9)+ | rowspan=2| |- | α (42%) | ^166mIr |-id=Gold-171 | rowspan=2|¹⁷¹Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 92 | rowspan=2|170.991882(22) | rowspan=2 data-sort-value="22.0e-6"| | p | ¹⁷⁰Pt | rowspan=2|1/2+ | rowspan=2| |- | α? | ¹⁶⁷Ir |-id=Gold-171m | rowspan=2 style="text-indent:1em" | ^171mAu | rowspan=2 colspan="3" style="text-indent:2em" | 258(13)&nbsp;keV | rowspan=2 data-sort-value="1.09e-3"|1.09(3)&nbsp;ms | α (66%) | ^167mIr | rowspan=2|11/2− | rowspan=2| |- | p (34%) | ¹⁷⁰Pt |-id=Gold-172 | rowspan=3|¹⁷²Au | rowspan=3 style="text-align:right" | 79 | rowspan=3 style="text-align:right" | 93 | rowspan=3|171.99000(6) | rowspan=3 data-sort-value="28.0e-3"|28(4)&nbsp;ms | α (98%) | ¹⁶⁸Ir | rowspan=3|(2)− | rowspan=3| |- | p (2%) | ¹⁷¹Pt |- | β⁺ | ¹⁷²Pt |-id=Gold-172m | rowspan=2 style="text-indent:1em" | ^172mAu | rowspan=2 colspan="3" style="text-indent:2em" | 160(250)&nbsp;keV | rowspan=2 data-sort-value="11.0e-3"|11.0(10)&nbsp;ms | α | ¹⁶⁸Ir | rowspan=2|(9,10)+ | rowspan=2| |- | p? | ¹⁷¹Pt |-id=Gold-173 | rowspan=2|¹⁷³Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 94 | rowspan=2|172.986224(24) | rowspan=2 data-sort-value="25.5e-3"|25.5(8)&nbsp;ms | α (86%) | ¹⁶⁹Ir | rowspan=2|(1/2+) | rowspan=2| |- | β⁺ (14%) | ¹⁷³Pt |-id=Gold-173m | rowspan=2 style="text-indent:1em" | ^173mAu | rowspan=2 colspan="3" style="text-indent:2em" | 214(21)&nbsp;keV | rowspan=2 data-sort-value="12.2e-3"|12.2(1)&nbsp;ms | α (89%) | ¹⁶⁹Ir | rowspan=2|(11/2−) | rowspan=2| |- | β⁺ (11%) | ¹⁷³Pt |-id=Gold-174 | rowspan=2|¹⁷⁴Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 95 | rowspan=2|173.98491(11)# | rowspan=2 data-sort-value="139.0e-3"|139(3)&nbsp;ms | α (90%) | ¹⁷⁰Ir | rowspan=2|(3−) | rowspan=2| |- | β⁺ (10%) | ¹⁷⁴Pt |-id=Gold-174m | rowspan=2 style="text-indent:1em" | ^174mAu | rowspan=2 colspan="3" style="text-indent:2em" | 130(50)#&nbsp;keV | rowspan=2 data-sort-value="162.0e-3"|162(2)&nbsp;ms | α? | ¹⁷⁰Ir | rowspan=2|(9+) | rowspan=2| |- | β⁺? | ¹⁷⁴Pt |-id=Gold-175 | rowspan=2|¹⁷⁵Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 96 | rowspan=2|174.98132(4) | rowspan=2 data-sort-value="200.0e-3"|200(3)&nbsp;ms | α (88%) | ¹⁷¹Ir | rowspan=2|1/2+ | rowspan=2| |- | β⁺ (12%) | ¹⁷⁵Pt |-id=Gold-175m | rowspan=2 style="text-indent:1em" | ^175mAu | rowspan=2 colspan="3" style="text-indent:2em" | 164(11)#&nbsp;keV | rowspan=2 data-sort-value="136.0e-3"|136(1)&nbsp;ms | α (75%) | ¹⁷¹Ir | rowspan=2|(11/2−) | rowspan=2| |- | β⁺ (25%) | ¹⁷⁵Pt |-id=Gold-176 | rowspan=2|¹⁷⁶Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 97 | rowspan=2|175.98012(4) | rowspan=2 data-sort-value="1.05"|1.05(1)&nbsp;s | α (75%) | ¹⁷²Ir | rowspan=2|(3−,4−) | rowspan=2| |- | β⁺ (25%) | ¹⁷⁶Pt |-id=Gold-176m | rowspan=2 style="text-indent:1em" | ^176mAu | rowspan=2 colspan="3" style="text-indent:2em" | 139(13)&nbsp;keV | rowspan=2 data-sort-value="1.36"|1.36(2)&nbsp;s | α? | ¹⁷²Ir | rowspan=2|(8+,9+) | rowspan=2| |- | β⁺? | ¹⁷⁶Pt |-id=Gold-177 | rowspan=2|¹⁷⁷Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 98 | rowspan=2|176.976870(11) | rowspan=2 data-sort-value="1.501"|1.501(20)&nbsp;s | β⁺ (60%) | ¹⁷⁷Pt | rowspan=2|1/2+ | rowspan=2| |- | α (40%) | ¹⁷³Ir |-id=Gold-177m | rowspan=2 style="text-indent:1em" | ^177mAu | rowspan=2 colspan="3" style="text-indent:2em" | 190(7)&nbsp;keV | rowspan=2 data-sort-value="1.193"|1.193(13)&nbsp;s | α (60%) | ¹⁷³Ir | rowspan=2|11/2− | rowspan=2| |- | β⁺ (40%) | ¹⁷⁷Pt |-id=Gold-178 | rowspan=2|¹⁷⁸Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 99 | rowspan=2|177.976057(11) | rowspan=2 data-sort-value="3.4"|3.4(5)&nbsp;s | β⁺ (84%) | ¹⁷⁸Pt | rowspan=2|(2+,3−) | rowspan=2| |- | α (16%) | ¹⁷⁴Ir |-id=Gold-178m1 | style="text-indent:1em" | ^178m1Au | colspan="3" style="text-indent:2em" | 50.3(2)&nbsp;keV | data-sort-value="300.0e-9"| 300(10)&nbsp;ns | IT | ¹⁷⁸Au | (4−,5+) | |-id=Gold-178m2 | rowspan=2 style="text-indent:1em" | ^178m2Au | rowspan=2 colspan="3" style="text-indent:2em" | 186(14)&nbsp;keV | rowspan=2 data-sort-value="2.7"|2.7(5)&nbsp;s | β⁺ (82%) | ¹⁷⁸Pt | rowspan=2|(7+,8−) | rowspan=2| |- | α (18%) | ¹⁷⁴Ir |-id=Gold-178m3 | style="text-indent:1em" | ^178m3Au | colspan="3" style="text-indent:2em" | 243(14)&nbsp;keV | data-sort-value="390.0e-9"| 390(10)&nbsp;ns | IT | ¹⁷⁸Au | (5+,6) | |-id=Gold-179 | 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)&nbsp;s | β⁺ (78.0%) | ¹⁷⁹Pt | rowspan=2|1/2+ | rowspan=2| |- | α (22.0%) | ¹⁷⁵Ir |-id=Gold-179m | style="text-indent:1em" | ^179mAu | colspan="3" style="text-indent:2em" | 89.5(3)&nbsp;keV | data-sort-value="327.0e-9"| 327(5)&nbsp;ns | IT | ¹⁷⁹Au | (3/2−) | |-id=Gold-180 | 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)&nbsp;s | β⁺ (99.42%) | ¹⁸⁰Pt | rowspan=2|(1+) | rowspan=2| |- | α (0.58%) | ¹⁷⁶Ir |-id=Gold-181 | 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)&nbsp;s | β⁺ (97.3%) | ¹⁸¹Pt | rowspan=2|(5/2−) | rowspan=2| |- | α (2.7%) | ¹⁷⁷Ir |-id=Gold-182 | 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)&nbsp;s | β⁺ (99.87%) | ¹⁸²Pt | rowspan=2|(2+) | rowspan=2| |- | α (0.13%) | ¹⁷⁸Ir |-id=Gold-183 | 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)&nbsp;s | β⁺ (99.45%) | ¹⁸³Pt | rowspan=2|5/2− | rowspan=2| |- | α (0.55%) | ¹⁷⁹Ir |-id=Gold-183m | style="text-indent:1em" | ^183mAu | colspan="3" style="text-indent:2em" | 73.10(1)&nbsp;keV | data-sort-value="1.000001e-6"| >1&nbsp;μs | IT | ¹⁸³Au | (1/2)+ | |-id=Gold-184 | 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)&nbsp;s | β⁺ (99.99%) | ¹⁸⁴Pt | rowspan=2|5+ | rowspan=2| |- | α (0.013%) | ¹⁸⁰Ir |-id=Gold-184m | rowspan=3 style="text-indent:1em" | ^184mAu | rowspan=3 colspan="3" style="text-indent:2em" | 68.46(4)&nbsp;keV | rowspan=3|47.6(14)&nbsp;s | β⁺ (70%) | ¹⁸⁴Pt | rowspan=3|2+ | rowspan=3| |- | IT (30%) | ¹⁸⁴Au |- | α (0.013%) | ¹⁸⁰Ir |-id=Gold-185 | rowspan=2|¹⁸⁵Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 106 | rowspan=2|184.9657989(28) | rowspan=2 data-sort-value="255.0"| 4.25(6)&nbsp;min | β⁺ (99.74%) | ¹⁸⁵Pt | rowspan=2|5/2− | rowspan=2| |- | α (0.26%) | ¹⁸¹Ir |-id=Gold-185m | rowspan=2 style="text-indent:1em" | ^185mAu | rowspan=2 colspan="3" style="text-indent:2em" | 50(50)#&nbsp;keV | rowspan=2 data-sort-value="408.0"|6.8(3)&nbsp;min | β⁺ | ¹⁸⁵Pt | rowspan=2|1/2+# | rowspan=2| |- | IT? | ¹⁸⁵Au |-id=Gold-186 | rowspan=2|¹⁸⁶Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 107 | rowspan=2|185.965953(23) | rowspan=2 data-sort-value="642.0"|10.7(5)&nbsp;min | β⁺ | ¹⁸⁶Pt | rowspan=2|3− | rowspan=2| |- | α (8×10^{−4}%) | ¹⁸²Ir |-id=Gold-186m | style="text-indent:1em" | ^186mAu | colspan="3" style="text-indent:2em" | 227.77(7)&nbsp;keV | data-sort-value="110.0e-9"| 110(10)&nbsp;ns | IT | ¹⁸⁶Au | 2+ | |-id=Gold-187 | rowspan=2|¹⁸⁷Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 108 | rowspan=2|186.964542(24) | rowspan=2 data-sort-value="498.0"|8.3(2)&nbsp;min | β⁺ | ¹⁸⁷Pt | rowspan=2|1/2+ | rowspan=2| |- | α? | ¹⁸³Ir |-id=Gold-187m | style="text-indent:1em" | ^187mAu | colspan="3" style="text-indent:2em" | 120.33(14)&nbsp;keV | 2.3(1)&nbsp;s | IT | ¹⁸⁷Au | 9/2− | |-id=Gold-188 | ¹⁸⁸Au | style="text-align:right" | 79 | style="text-align:right" | 109 |187.9652480(29) | data-sort-value="530.4"| 8.84(6)&nbsp;min | β⁺ | ¹⁸⁸Pt | 1− | |-id=Gold-189 | rowspan=2|¹⁸⁹Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 110 | rowspan=2|188.963948(22) | rowspan=2 data-sort-value="1722.0"|28.7(4)&nbsp;min | β⁺ | ¹⁸⁹Pt | rowspan=2|1/2+ | rowspan=2| |- | α? (<3×10^{−5}%) | ¹⁸⁵Ir |-id=Gold-189m1 | rowspan=2 style="text-indent:1em" | ^189m1Au | rowspan=2 colspan="3" style="text-indent:2em" | 247.25(16)&nbsp;keV | rowspan=2 data-sort-value="275.4"|4.59(11)&nbsp;min | β⁺ | ¹⁸⁹Pt | rowspan=2|11/2− | rowspan=2| |- | IT? | ¹⁸⁹Au |-id=Gold-189m2 | style="text-indent:1em" | ^189m2Au | colspan="3" style="text-indent:2em" | 325.12(16)&nbsp;keV | data-sort-value="190.0e-9"| 190(15)&nbsp;ns | IT | ¹⁸⁹Au | 9/2− | |-id=Gold-189m3 | style="text-indent:1em" | ^189m3Au | colspan="3" style="text-indent:2em" | 2554.8(8)&nbsp;keV | data-sort-value="242.0e-9"| 242(10)&nbsp;ns | IT | ¹⁸⁹Au | 31/2+ | |-id=Gold-190 | rowspan=2|¹⁹⁰Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 111 | rowspan=2|189.964752(4) | rowspan=2 data-sort-value="2568.0"|42.8(10)&nbsp;min | β⁺ | ¹⁹⁰Pt | rowspan=2|1− | rowspan=2| |- | α? (<10^{−6}%) | ¹⁸⁶Ir |-id=Gold-190m | rowspan=2 style="text-indent:1em" | ^190mAu | rowspan=2 colspan="3" style="text-indent:2em" | 200(150)#&nbsp;keV | rowspan=2 data-sort-value="125.0e-3"|125(20)&nbsp;ms | IT | ¹⁹⁰Au | rowspan=2|11−# | rowspan=2| |- | β⁺? | ¹⁹⁰Pt |-id=Gold-191 | ¹⁹¹Au | style="text-align:right" | 79 | style="text-align:right" | 112 | 190.963716(5) | data-sort-value="11448.0"| 3.18(8)&nbsp;h | β⁺ | ¹⁹¹Pt | 3/2+ | |-id=Gold-191m1 | style="text-indent:1em" | ^191m1Au | colspan="3" style="text-indent:2em" | 266.2(7)&nbsp;keV | data-sort-value="920.0e-3"| 920(110)&nbsp;ms | IT | ¹⁹¹Au | 11/2− | |-id=Gold-191m2 | style="text-indent:1em" | ^191m2Au | colspan="3" style="text-indent:2em" | 2489.6(9)&nbsp;keV | data-sort-value="402.0e-9"| 402(20)&nbsp;ns | IT | ¹⁹¹Au | 31/2+ | |-id=Gold-192 | ¹⁹²Au | style="text-align:right" | 79 | style="text-align:right" | 113 | 191.964818(17) | data-sort-value="17784.0"| 4.94(9)&nbsp;h | β⁺ | ¹⁹²Pt | 1− | |-id=Gold-192m1 | style="text-indent:1em" | ^192m1Au | colspan="3" style="text-indent:2em" | 135.41(25)&nbsp;keV | data-sort-value="29.0e-3"| 29&nbsp;ms | IT | ¹⁹²Au | 5+ | |-id=Gold-192m2 | style="text-indent:1em" | ^192m2Au | colspan="3" style="text-indent:2em" | 431.6(5)&nbsp;keV | data-sort-value="160.0e-3"| 160(20)&nbsp;ms | IT | ¹⁹²Au | 11− | |-id=Gold-193 | ¹⁹³Au | style="text-align:right" | 79 | style="text-align:right" | 114 | 192.964138(9) | data-sort-value="63540.0"| 17.65(15)&nbsp;h | β⁺ | ¹⁹³Pt | 3/2+ | |-id=Gold-193m1 | rowspan=2 style="text-indent:1em" | ^193m1Au | rowspan=2 colspan="3" style="text-indent:2em" | 290.20(4)&nbsp;keV | rowspan=2|3.9(3)&nbsp;s | IT (99.97%) | ¹⁹³Au | rowspan=2|11/2− | rowspan=2| |- | β⁺ (0.03%) | ¹⁹³Pt |-id=Gold-193m2 | style="text-indent:1em" | ^193m2Au | colspan="3" style="text-indent:2em" | 2486.7(6)&nbsp;keV | data-sort-value="150.0e-9"| 150(50)&nbsp;ns | IT | ¹⁹³Au | 31/2+ | |-id=Gold-194 | ¹⁹⁴Au | style="text-align:right" | 79 | style="text-align:right" | 115 | 193.9654191(23) | data-sort-value="136872.0"| 38.02(10)&nbsp;h | β⁺ | ¹⁹⁴Pt | 1− | |-id=Gold-194m1 | style="text-indent:1em" | ^194m1Au | colspan="3" style="text-indent:2em" | 107.4(5)&nbsp;keV | data-sort-value="600.0e-3"| 600(8)&nbsp;ms | IT | ¹⁹⁴Au | 5+ | |-id=Gold-194m2 | style="text-indent:1em" | ^194m2Au | colspan="3" style="text-indent:2em" | 475.8(6)&nbsp;keV | data-sort-value="420.0e-3"| 420(10)&nbsp;ms | IT | ¹⁹⁴Au | 11− | |-id=Gold-195 | ¹⁹⁵Au | style="text-align:right" | 79 | style="text-align:right" | 116 | 194.9650378(12) | data-sort-value="16.071264e6"|186.01(6)&nbsp;d | EC | ¹⁹⁵Pt | 3/2+ | |-id=Gold-195m1 | style="text-indent:1em" | ^195m1Au | colspan="3" style="text-indent:2em" | 318.58(4)&nbsp;keV | 30.5(2)&nbsp;s | IT | ¹⁹⁵Au | 11/2− | |-id=Gold-195m2 | style="text-indent:1em" | ^195m2Au | colspan="3" style="text-indent:2em" | 2501(20)#&nbsp;keV | data-sort-value="12.89e-6"| 12.89(21)&nbsp;μs | IT | ¹⁹⁵Au | 31/2(−) | |-id=Gold-196 | rowspan=2|¹⁹⁶Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 117 | rowspan=2|195.966571(3) | rowspan=2 data-sort-value="532656.0"|6.165(11)&nbsp;d | β⁺ (93.0%) | ¹⁹⁶Pt | rowspan=2|2− | rowspan=2| |- | β^− (7.0%) | ¹⁹⁶Hg |-id=Gold-196m1 | style="text-indent:1em" | ^196m1Au | colspan="3" style="text-indent:2em" | 84.656(20)&nbsp;keV | 8.1(2)&nbsp;s | IT | ¹⁹⁶Au | 5+ | |-id=Gold-196m2 | style="text-indent:1em" | ^196m2Au | colspan="3" style="text-indent:2em" | 595.66(4)&nbsp;keV | data-sort-value="34571.8"| 9.603(22)&nbsp;h | IT | ¹⁹⁶Au | 12− | |-id=Gold-197 | ¹⁹⁷Au | style="text-align:right" | 79 | style="text-align:right" | 118 | 196.9665701(6) | colspan=3 align=center data-sort-value="1.0e99"|Observationally Stable | 3/2+ | 1.0000 |-id=Gold-197m1 | style="text-indent:1em" | ^197m1Au | colspan="3" style="text-indent:2em" | 409.15(8)&nbsp;keV | 7.73(6)&nbsp;s | IT | ¹⁹⁷Au | 11/2− | |-id=Gold-197m2 | style="text-indent:1em" | ^197m2Au | colspan="3" style="text-indent:2em" | 2532.5(10)&nbsp;keV | data-sort-value="150.0e-9"| 150(5)&nbsp;ns | IT | ¹⁹⁷Au | 27/2+# | |- | ¹⁹⁸Au | style="text-align:right" | 79 | style="text-align:right" | 119 | 197.9682437(6) | data-sort-value="232816.896"| 2.69464(14)&nbsp;d | β^− | ¹⁹⁸Hg | 2− | |-id=Gold-198m1 | style="text-indent:1em" | ^198m1Au | colspan="3" style="text-indent:2em" | 312.2227(20)&nbsp;keV | data-sort-value="124e-9"| 124(4)&nbsp;ns | IT | ¹⁹⁸Au | 5+ | |-id=Gold-198m2 | style="text-indent:1em" | ^198m2Au | colspan="3" style="text-indent:2em" | 811.9(15)&nbsp;keV | data-sort-value="196300.8"| 2.272(16)&nbsp;d | IT | ¹⁹⁸Au | 12− | |-id=Gold-199 | ¹⁹⁹Au | style="text-align:right" | 79 | style="text-align:right" | 120 | 198.9687666(6) | data-sort-value="271209.6"| 3.139(7)&nbsp;d | β^− | ¹⁹⁹Hg | 3/2+ | |-id=Gold-199m | style="text-indent:1em" | ^199mAu | colspan="3" style="text-indent:2em" | 548.9405(21)&nbsp;keV | data-sort-value="440.0e-6"| 440(30)&nbsp;μs | IT | ¹⁹⁹Au | 11/2− | |-id=Gold-200 | ²⁰⁰Au | style="text-align:right" | 79 | style="text-align:right" | 121 | 199.970757(29) | data-sort-value="2904.0"| 48.4(3)&nbsp;min | β^− | ²⁰⁰Hg | (1−) | |-id=Gold-200m | rowspan=2 style="text-indent:1em" | ^200mAu | rowspan=2 colspan="3" style="text-indent:2em" | 1010(40)&nbsp;keV | rowspan=2|18.7(5)&nbsp;h | β^− (84%) | ²⁰⁰Hg | rowspan=2|12− | rowspan=2| |- | IT (16%) | ²⁰⁰Au |-id=Gold-201 | ²⁰¹Au | style="text-align:right" | 79 | style="text-align:right" | 122 | 200.971658(3) | data-sort-value="1560.0"| 26.0(8)&nbsp;min | β^− | ²⁰¹Hg | 3/2+ | |-id=Gold-201m1 | style="text-indent:1em" | ^201m1Au | colspan="3" style="text-indent:2em" | 594(5)&nbsp;keV | data-sort-value="730.0e-6"| 730(630)&nbsp;μs | IT | ²⁰¹Au | 11/2- | |-id=Gold-201m2 | style="text-indent:1em" | ^201m2Au | colspan="3" style="text-indent:2em" | 1610(5)&nbsp;keV | data-sort-value="5.6e-6"| 5.6(24)&nbsp;μs | IT | ²⁰¹Au | 19/2+# | |-id=Gold-202 | ²⁰²Au | style="text-align:right" | 79 | style="text-align:right" | 123 | 201.973856(25) | 28.4(12)&nbsp;s | β^− | ²⁰²Hg | (1−) | |-id=Gold-203 | ²⁰³Au | style="text-align:right" | 79 | style="text-align:right" | 124 | 202.9751545(33) | 60(6)&nbsp;s | β^− | ²⁰³Hg | 3/2+ | |-id=Gold-203m | style="text-indent:1em" | ^203mAu | colspan="3" style="text-indent:2em" | 641(3)&nbsp;keV | data-sort-value="140.0e-6"| 140(44)&nbsp;μs | IT | ²⁰³Au | 11/2−# | |-id=Gold-204 | ²⁰⁴Au | style="text-align:right" | 79 | style="text-align:right" | 125 | 203.97811(22)# | 38.3(13)&nbsp;s | β^− | ²⁰⁴Hg | (2−) | |-id=Gold-204m | style="text-indent:1em" | ^204mAu | colspan="3" style="text-indent:2em" | 3816(500)#&nbsp;keV | data-sort-value="2.1e-6"| 2.1(3)&nbsp;μs | IT | ²⁰⁴Au | 16+# | |-id=Gold-205 | ²⁰⁵Au | style="text-align:right" | 79 | style="text-align:right" | 126 | 204.98006(22)# | 32.0(14)&nbsp;s | β^− | ²⁰⁵Hg | 3/2+# | |-id=Gold-205m1 | rowspan=2 style="text-indent:1em" | ^205m1Au | rowspan=2 colspan="3" style="text-indent:2em" | 907(5)&nbsp;keV | rowspan=2|6(2)&nbsp;s | IT? | ²⁰⁵Au | rowspan=2|11/2−# | rowspan=2| |- | β^−? | ²⁰⁵Hg |-id=Gold-205m2 | style="text-indent:1em" | ^205m2Au | colspan="3" style="text-indent:2em" | 2849.7(4)&nbsp;keV | data-sort-value="163.0e-9"| 163(5)&nbsp;ns | IT | ²⁰⁵Au | 19/2+# | |-id=Gold-206 | ²⁰⁶Au | style="text-align:right" | 79 | style="text-align:right" | 127 | 205.98477(32)# | 47(11)&nbsp;s | β^− | ²⁰⁶Hg | 6+# | |-id=Gold-207 | rowspan=2|²⁰⁷Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 128 | rowspan=2|206.98858(32)# | rowspan=2 data-sort-value="3.0"|3#&nbsp;s<br />[>300&nbsp;ns] | β^−? | ²⁰⁷Hg | rowspan=2|3/2+# | rowspan=2| |- | β^−, n? | ²⁰⁶Hg |-id=Gold-208 | rowspan=2|²⁰⁸Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 129 | rowspan=2|207.99366(32)# | rowspan=2 data-sort-value="20.0"|20#&nbsp;s<br />[>300&nbsp;ns] | β^−? | ²⁰⁸Hg | rowspan=2|6+# | rowspan=2| |- | β^−, n? | ²⁰⁷Hg |-id=Gold-209 | rowspan=2|²⁰⁹Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 130 | rowspan=2|208.99761(43)# | rowspan=2 data-sort-value="1.0"|1#&nbsp;s<br />[>300&nbsp;ns] | β^−? | ²⁰⁹Hg | rowspan=2|3/2+# | rowspan=2| |- | β^−, n? | ²⁰⁸Hg |-id=Gold-210 | rowspan=2|²¹⁰Au | rowspan=2 style="text-align:right" | 79 | rowspan=2 style="text-align:right" | 131 | rowspan=2|210.00288(43)# | rowspan=2 data-sort-value="10.0"|10#&nbsp;s<br />[>300&nbsp;ns] | β^−? | ²¹⁰Hg | rowspan=2|6+# | rowspan=2| |- | β^−, n? | ²⁰⁹Hg

See also

Daughter products other than gold

• Isotopes of mercury
• Isotopes of platinum
• Isotopes of iridium

References