# Isotopen van goud

Het chemisch element goud (Au), met een atoommassa van 196,966569(4) u, bezit 1 stabiele isotoop: $^{197}$Au. Het is tevens de enige in de natuur voorkomende isotoop van dit element, waardoor het valt onder de mononuclidische elementen. Goud is daarmee het zwaarste mononuclidisch element. De 36 radio-isotopen zijn onstabiel en hebben een relatief korte halfwaardetijd (de meeste minder dan een seconde).
De kortstlevende isotoop van goud is $^{171}$Au, met een halfwaardetijd van ongeveer 30 microseconden. De langstlevende is $^{195}$Au, met een halfwaardetijd van 186 dagen.

## Overzicht

| Nuclide | Z (p) | N (n) | Isotopische massa (u) | Halveringstijd | Radioactief verval | VP | Kernspin | Isotopische verhouding (molfractie) |
| Natuurlijk voorkomen (molfractie) |||
| $^{169}$Au | 79 | 90 | 168,99808(32) | 150 µs | | | 1/2$^+$ | |
| $^{170}$Au | 79 | 91 | 169,99612(22) | 310(50) µs | | | (2$^−$) | |
| $^{170m}$Au | 275(14) keV | 275(14) keV | 275(14) keV | 630(60) µs | | | (9$^+$) | |
| $^{171}$Au | 79 | 92 | 170,991879(28) | 30(5) µs | p | $^{170}$Pt | (1/2$^+$) | |
| $^{171}$Au | 79 | 92 | 170,991879(28) | 30(5) µs | α (zelden) | $^{167}$Ir | (1/2$^+$) | |
| $^{171m}$Au | 250(16) keV | 250(16) keV | 250(16) keV | 1,014(19) ms | α (54%) | $^{167}$Ir | 11/2$^−$ | |
| $^{171m}$Au | 250(16) keV | 250(16) keV | 250(16) keV | 1,014(19) ms | p (46%) | $^{170}$Pt | 11/2$^−$ | |
| $^{172}$Au | 79 | 93 | 171,99004(17) | 4,7(11) ms | α (98%) | $^{168}$Ir | | |
| $^{172}$Au | 79 | 93 | 171,99004(17) | 4,7(11) ms | p (2%) | $^{171}$Pt | | |
| $^{173}$Au | 79 | 94 | 172,986237(28) | 25(1) ms | α | $^{169}$Ir | (1/2$^+$) | |
| $^{173}$Au | 79 | 94 | 172,986237(28) | 25(1) ms | β$^+$ (zelden) | $^{173}$Pt | (1/2$^+$) | |
| $^{173m}$Au | 214(23) keV | 214(23) keV | 214(23) keV | 14,0(9) ms | α (96%) | $^{169}$Ir | (11/2$^−$) | |
| $^{173m}$Au | 214(23) keV | 214(23) keV | 214(23) keV | 14,0(9) ms | β$^+$ (4%) | $^{173}$Pt | (11/2$^−$) | |
| $^{174}$Au | 79 | 95 | 173,98476(11) | 139(3) ms | α | $^{170}$Ir | | |
| $^{174}$Au | 79 | 95 | 173,98476(11) | 139(3) ms | β$^+$ (zelden) | $^{174}$Pt | | |
| $^{174m}$Au | 360(70) keV | 360(70) keV | 360(70) keV | 171(29) ms | | | | |
| $^{175}$Au | 79 | 96 | 174,98127(5) | 100 ms | α (82%) | $^{171}$Ir | 1/2$^+$ | |
| $^{175}$Au | 79 | 96 | 174,98127(5) | 100 ms | β$^+$ (18%) | $^{175}$Pt | 1/2$^+$ | |
| $^{175m}$Au | 200(30) keV | 200(30) keV | 200(30) keV | 156(3) ms | α | $^{171}$Ir | 11/2$^−$ | |
| $^{175m}$Au | 200(30) keV | 200(30) keV | 200(30) keV | 156(3) ms | β$^+$ | $^{175}$Pt | 11/2$^−$ | |
| $^{176}$Au | 79 | 97 | 175,98010(11) | 1,08(17) s | α (60%) | $^{172}$Ir | (5$^−$) | |
| $^{176}$Au | 79 | 97 | 175,98010(11) | 1,08(17) s | β$^+$ (40%) | $^{176}$Pt | (5$^−$) | |
| $^{176m}$Au | 150(100) keV | 150(100) keV | 150(100) keV | 860(160) ms | | | (7$^+$) | |
| $^{177}$Au | 79 | 98 | 176,976865(14) | 1,462(32) s | β$^+$ (60%) | $^{177}$Pt | (1/2$^+$, 3/2$^+$) | |
| $^{177}$Au | 79 | 98 | 176,976865(14) | 1,462(32) s | α (40%) | $^{173}$Ir | (1/2$^+$, 3/2$^+$) | |
| $^{177m}$Au | 216(26) keV | 216(26) keV | 216(26) keV | 1,180(12) s | | | 11/2$^−$ | |
| $^{178}$Au | 79 | 99 | 177,97603(6) | 2,6(5) s | β$^+$ (60%) | $^{178}$Pt | | |
| $^{178}$Au | 79 | 99 | 177,97603(6) | 2,6(5) s | α (40%) | $^{174}$Ir | | |
| $^{179}$Au | 79 | 100 | 178,973213(18) | 7,1(3) s | β$^+$ (78%) | $^{179}$Pt | 5/2$^−$ | |
| $^{179}$Au | 79 | 100 | 178,973213(18) | 7,1(3) s | α (22%) | $^{175}$Ir | 5/2$^−$ | |
| $^{179m}$Au | 99(16) keV | 99(16) keV | 99(16) keV | | | | (11/2$^−$) | |
| $^{180}$Au | 79 | 101 | 179,972521(23) | 8,1(3) s | β$^+$ (98,2%) | $^{180}$Pt | | |
| $^{180}$Au | 79 | 101 | 179,972521(23) | 8,1(3) s | α (1,8%) | $^{176}$Ir | | |
| $^{181}$Au | 79 | 102 | 180,970079(21) | 13,7(14) s | β$^+$ (97,3%) | $^{181}$Pt | (3/2$^−$) | |
| $^{181}$Au | 79 | 102 | 180,970079(21) | 13,7(14) s | α (2,7%) | $^{177}$Ir | (3/2$^−$) | |
| $^{182}$Au | 79 | 103 | 181,969618(22) | 15,5(4) s | β$^+$ (99,87%) | $^{182}$Pt | (2$^+$) | |
| $^{182}$Au | 79 | 103 | 181,969618(22) | 15,5(4) s | α (0,13%) | $^{178}$Ir | (2$^+$) | |
| $^{183}$Au | 79 | 104 | 182,967593(11) | 42,8(10) s | β$^+$ (99,2%) | $^{183}$Pt | 5/2$^−$ | |
| $^{183}$Au | 79 | 104 | 182,967593(11) | 42,8(10) s | α (0,8%) | $^{179}$Ir | 5/2$^−$ | |
| $^{183m1}$Au | 73,3(4) keV | 73,3(4) keV | 73,3(4) keV | > 1 µs | | | 1/2$^+$ | |
| $^{183m2}$Au | 230,6(6) keV | 230,6(6) keV | 230,6(6) keV | < 1 µs | | | 11/2$^−$ | |
| $^{184}$Au | 79 | 105 | 183,967452(24) | 20,6(9) s | β$^+$ | $^{184}$Pt | 5$^+$ | |
| $^{184m}$Au | 68,46(1) keV | 68,46(1) keV | 68,46(1) keV | 47,6(14) s | β$^+$ (70%) | $^{184}$Pt | 2$^+$ | |
| $^{184m}$Au | 68,46(1) keV | 68,46(1) keV | 68,46(1) keV | 47,6(14) s | IT (30%) | $^{184}$Au | 2$^+$ | |
| $^{184m}$Au | 68,46(1) keV | 68,46(1) keV | 68,46(1) keV | 47,6(14) s | α (0,013%) | $^{180}$Ir | 2$^+$ | |
| $^{185}$Au | 79 | 106 | 184,965789(28) | 4,25(6) min | β$^+$ (99,74%) | $^{185}$Pt | 5/2$^−$ | |
| $^{185}$Au | 79 | 106 | 184,965789(28) | 4,25(6) min | α (0,26%) | $^{181}$Ir | 5/2$^−$ | |
| $^{185m}$Au | 100(100) keV | 100(100) keV | 100(100) keV | 6,8(3) min | | | 1/2$^+$ | |
| $^{186}$Au | 79 | 107 | 185,965953(23) | 10,7(5) min | β$^+$ (99,9992%) | $^{186}$Pt | 3$^−$ | |
| $^{186}$Au | 79 | 107 | 185,965953(23) | 10,7(5) min | α (8 × 10$^{−4}$%) | $^{182}$Ir | 3$^−$ | |
| $^{186m}$Au | 227,77(7) keV | 227,77(7) keV | 227,77(7) keV | 110(10) ns | | | 2$^+$ | |
| $^{187}$Au | 79 | 108 | 186,964568(27) | 8,4(3) min | β$^+$ (99,997%) | $^{187}$Pt | 1/2$^+$ | |
| $^{187}$Au | 79 | 108 | 186,964568(27) | 8,4(3) min | α (0,003%) | $^{183}$Ir | 1/2$^+$ | |
| $^{187m}$Au | 120,51(16) keV | 120,51(16) keV | 120,51(16) keV | 2,3(1) s | IT | $^{187}$Au | 9/2$^−$ | |
| $^{188}$Au | 79 | 109 | 187,965324(22) | 8,84(6) min | β$^+$ | $^{188}$Pt | 1$^−$ | |
| $^{189}$Au | 79 | 110 | 188,963948(22) | 28,7(3) min | β$^+$ (99,9997%) | $^{189}$Pt | 1/2$^+$ | |
| $^{189}$Au | 79 | 110 | 188,963948(22) | 28,7(3) min | α (3 × 10$^{−4}$%) | $^{185}$Ir | 1/2$^+$ | |
| $^{189m1}$Au | 247,23(16) keV | 247,23(16) keV | 247,23(16) keV | 4,59(11) min | β$^+$ | $^{189}$Pt | 11/2$^−$ | |
| $^{189m1}$Au | 247,23(16) keV | 247,23(16) keV | 247,23(16) keV | 4,59(11) min | IT (zelden) | $^{189}$Au | 11/2$^−$ | |
| $^{189m2}$Au | 325,11(16) keV | 325,11(16) keV | 325,11(16) keV | 190(15) ns | | | 9/2$^−$ | |
| $^{189m3}$Au | 2554,7(12) keV | 2554,7(12) keV | 2554,7(12) keV | 242(10) ns | | | 31/2$^+$ | |
| $^{190}$Au | 79 | 111 | 189,964700(17) | 42,8(10) min | β$^+$ | $^{190}$Pt | 1- | |
| $^{190}$Au | 79 | 111 | 189,964700(17) | 42,8(10) min | α (10$^{−6}$%) | $^{186}$Ir | 1- | |
| $^{190m}$Au | 200(150) keV | 200(150) keV | 200(150) keV | 125(20) ms | IT | $^{190}$Au | 11$^−$ | |
| $^{190m}$Au | 200(150) keV | 200(150) keV | 200(150) keV | 125(20) ms | β$^+$ (zelden) | $^{190}$Pt | 11$^−$ | |
| $^{191}$Au | 79 | 112 | 190,96370(4) | 3,18(8) uur | β$^+$ | $^{191}$Pt | 3/2$^+$ | |
| $^{191m1}$Au | 266,2(5) keV | 266,2(5) keV | 266,2(5) keV | 920(110) ms | IT | $^{191}$Au | (11/2$^−$) | |
| $^{191m2}$Au | 2490(1) keV | 2490(1) keV | 2490(1) keV | > 400 ns | | | | |
| $^{192}$Au | 79 | 113 | 191,964813(17) | 4,94(9) uur | β$^+$ | $^{192}$Pt | 1$^−$ | |
| $^{192m1}$Au | 135,41(25) keV | 135,41(25) keV | 135,41(25) keV | 29 ms | IT | $^{192}$Au | 5$^+$ | |
| $^{192m2}$Au | 431,6(5) keV | 431,6(5) keV | 431,6(5) keV | 160(20) ms | | | (11$^−$) | |
| $^{193}$Au | 79 | 114 | 192,964150(11) | 17,65(15) uur | β$^+$ (100%) | $^{193}$Pt | 3/2$^+$ | |
| $^{193}$Au | 79 | 114 | 192,964150(11) | 17,65(15) uur | α (10$^{−5}$%) | $^{189}$It | 3/2$^+$ | |
| $^{193m1}$Au | 290,19(3) keV | 290,19(3) keV | 290,19(3) keV | 3,9(3) s | IT (99,97%) | $^{193}$Au | 11/2$^−$ | |
| $^{193m1}$Au | 290,19(3) keV | 290,19(3) keV | 290,19(3) keV | 3,9(3) s | β$^+$ (0,03%) | $^{193}$Pt | 11/2$^−$ | |
| $^{193m2}$Au | 2486,5(6) keV | 2486,5(6) keV | 2486,5(6) keV | 150(50) ns | | | (31/2$^+$) | |
| $^{194}$Au | 79 | 115 | 193,965365(11) | 38,02(10) uur | β$^+$ | $^{194}$Pt | 1$^−$ | |
| $^{194m1}$Au | 107,4(5) keV | 107,4(5) keV | 107,4(5) keV | 600(8) ms | IT | $^{194}$Au | (5$^+$) | |
| $^{194m2}$Au | 475,8(6) keV | 475,8(6) keV | 475,8(6) keV | 420(10) ms | | | (11$^−$) | |
| $^{195}$Au | 79 | 116 | 194,9650346(14) | 186,098(47) d | EV | $^{195}$Pt | 3/2$^+$ | |
| $^{195m}$Au | 318,58(4) keV | 318,58(4) keV | 318,58(4) keV | 30,5(2) s | IT | $^{195}$Au | 11/2$^−$ | |
| $^{196}$Au | 79 | 117 | 195,966570(3) | 6,1669(6) dagen | β$^+$ (93,05%) | $^{196}$Pt | 2$^−$ | |
| $^{196}$Au | 79 | 117 | 195,966570(3) | 6,1669(6) dagen | β$^−$ (6,95%) | $^{196}$Hg | 2$^−$ | |
| $^{196m1}$Au | 84,660(20) keV | 84,660(20) keV | 84,660(20) keV | 8,1(2) s | IT | $^{196}$Au | 5$^+$ | |
| $^{196m2}$Au | 595,66(4) keV | 595,66(4) keV | 595,66(4) keV | 9,6(1) uur | | | 12$^−$ | |
| $^{197}$Au | 79 | 118 | 196,9665687(6) | stabiel | stabiel | stabiel | 3/2$^+$ | 1,0000 |
| $^{197m}$Au | 409,15(8) keV | 409,15(8) keV | 409,15(8) keV | 7,73(6) s | IT | $^{197}$Au | 11/2$^−$ | |
| $^{198}$Au | 79 | 119 | 197,9682423(6) | 2,69517(21) dagen | β$^−$ | $^{198}$Hg | 2$^−$ | |
| $^{198m1}$Au | 312,2200(20) keV | 312,2200(20) keV | 312,2200(20) keV | 124(4) ns | | | 5$^+$ | |
| $^{198m2}$Au | 811,7(15) keV | 811,7(15) keV | 811,7(15) keV | 2,27(2) dagen | IT | $^{198}$Au | (12$^−$) | |
| $^{199}$Au | 79 | 120 | 198,9687652(6) | 3,139(7) dagen | β$^−$ | $^{199}$Hg | 3/2$^+$ | |
| $^{199m}$Au | 548,9368(21) keV | 548,9368(21) keV | 548,9368(21) keV | 440(30) µs | | | 11/2$^−$ | |
| $^{200}$Au | 79 | 121 | 199,97073(5) | 48,4(3) min | β$^−$ | $^{200}$Hg | 1$^−$ | |
| $^{200m}$Au | 970(70) keV | 970(70) keV | 970(70) keV | 18,7(5) uur | β$^−$ (82%) | $^{200}$Hg | 12$^−$ | |
| $^{200m}$Au | 970(70) keV | 970(70) keV | 970(70) keV | 18,7(5) uur | IT (18%) | $^{200}$Au | 12$^−$ | |
| $^{201}$Au | 79 | 122 | 200,971657(3) | 26(1) min | β$^−$ | $^{201}$Hg | 3/2$^+$ | |
| $^{202}$Au | 79 | 123 | 201,97381(18) | 28,8(19) s | β$^−$ | $^{202}$Hg | (1$^−$) | |
| $^{203}$Au | 79 | 124 | 202,975155(3) | 53(2) s | β$^−$ | $^{203}$Hg | 3/2$^+$ | |
| $^{204}$Au | 79 | 125 | 203,97772(22) | 39,8(9) s | β$^−$ | $^{204}$Hg | (2$^−$) | |
| $^{205}$Au | 79 | 126 | 204,97987(32) | 31(2) s | β$^−$ | $^{205}$Hg | 3/2$^+$ | |

## Overzicht van isotopen per element

* (en) R.B. Firestone, S.Y. Frank Chu & C.M. Baglin (1999) - Table of Isotopes (online versie van de cd-rom)
* (en) G. Audi, A.H. Wapstra, C. Thibault, J. Blachot & O. Bersillon (2003) - The NUBASE evaluation of nuclear and decay properties, Nuclear Physics A, 729, pp. 3-128
* (en) J.R. de Laeter, J.K. Böhlke, P. De Bièvre, H. Hidaka, H.S. Peiser, K.J.R. Rosman & P.D.P. Taylor (2003) - Atomic weights of the elements. Review 2000 (IUPAC Technical Report), Pure and Applied Chemistry, 75 (6), pp. 683–800
* (en) M.E. Wieser (2006) - Atomic weights of the elements 2005 (IUPAC Technical Report), Pure and Applied Chemistry, 78 (11), pp. 2051–2066
* (en) David R. Lide (2004) - CRC Handbook of Chemistry and Physics (85th ed.), hoofdstuk 11, CRC Press - ISBN 978-0849304859
$^{169}$Au · $^{170}$Au · $^{170m}$Au · $^{171}$Au · $^{171m}$Au · $^{172}$Au · $^{173}$Au · $^{173m}$Au · $^{174}$Au · $^{174m}$Au · $^{175}$Au · $^{175m}$Au · $^{176}$Au · $^{176m}$Au · $^{177}$Au · $^{177m}$Au · $^{178}$Au · $^{179}$Au · $^{179m}$Au · $^{180}$Au · $^{181}$Au · $^{182}$Au · $^{183}$Au · $^{183m1}$Au · $^{183m2}$Au · $^{184}$Au · $^{184m}$Au · $^{185}$Au · $^{185m}$Au · $^{186}$Au · $^{186m}$Au · $^{187}$Au · $^{187m}$Au · $^{188}$Au · $^{189}$Au · $^{189m1}$Au · $^{189m2}$Au · $^{189m3}$Au · $^{190}$Au · $^{190m}$Au · $^{191}$Au · $^{191m1}$Au · $^{191m2}$Au · $^{192}$Au · $^{192m1}$Au · $^{192m2}$Au · $^{193}$Au · $^{193m1}$Au · $^{193m2}$Au · $^{194}$Au · $^{194m1}$Au · $^{194m2}$Au · $^{195}$Au · $^{195m}$Au · $^{196}$Au · $^{196m1}$Au · $^{196m2}$Au · $^{197}$Au · $^{197m}$Au · $^{198}$Au · $^{198m1}$Au · $^{198m2}$Au · $^{199}$Au · $^{199m}$Au · $^{200}$Au · $^{200m}$Au · $^{201}$Au · $^{202}$Au · $^{203}$Au · $^{204}$Au · $^{205}$Au · $^{206}$Au · $^{207}$Au · $^{208}$Au · $^{209}$Au · $^{210}$Au