Isotopen van goud

Het chemisch element goud (Au), met een atoommassa van 196,966569(4) u, bezit 1 stabiele isotoop: 197Au. 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 171Au, met een halfwaardetijd van ongeveer 30 microseconden. De langstlevende is 195Au, 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)
Excitatie-energie
169Au 79 90 168,99808(32) 150 µs 1/2+
170Au 79 91 169,99612(22) 310(50) µs (2)
170mAu 275(14) keV 630(60) µs (9+)
171Au 79 92 170,991879(28) 30(5) µs p 170Pt (1/2+)
α (zelden) 167Ir
171mAu 250(16) keV 1,014(19) ms α (54%) 167Ir 11/2
p (46%) 170Pt
172Au 79 93 171,99004(17) 4,7(11) ms α (98%) 168Ir
p (2%) 171Pt
173Au 79 94 172,986237(28) 25(1) ms α 169Ir (1/2+)
β+ (zelden) 173Pt
173mAu 214(23) keV 14,0(9) ms α (96%) 169Ir (11/2)
β+ (4%) 173Pt
174Au 79 95 173,98476(11) 139(3) ms α 170Ir
β+ (zelden) 174Pt
174mAu 360(70) keV 171(29) ms
175Au 79 96 174,98127(5) 100 ms α (82%) 171Ir 1/2+
β+ (18%) 175Pt
175mAu 200(30) keV 156(3) ms α 171Ir 11/2
β+ 175Pt
176Au 79 97 175,98010(11) 1,08(17) s α (60%) 172Ir (5)
β+ (40%) 176Pt
176mAu 150(100) keV 860(160) ms (7+)
177Au 79 98 176,976865(14) 1,462(32) s β+ (60%) 177Pt (1/2+, 3/2+)
α (40%) 173Ir
177mAu 216(26) keV 1,180(12) s 11/2
178Au 79 99 177,97603(6) 2,6(5) s β+ (60%) 178Pt
α (40%) 174Ir
179Au 79 100 178,973213(18) 7,1(3) s β+ (78%) 179Pt 5/2
α (22%) 175Ir
179mAu 99(16) keV (11/2)
180Au 79 101 179,972521(23) 8,1(3) s β+ (98,2%) 180Pt
α (1,8%) 176Ir
181Au 79 102 180,970079(21) 13,7(14) s β+ (97,3%) 181Pt (3/2)
α (2,7%) 177Ir
182Au 79 103 181,969618(22) 15,5(4) s β+ (99,87%) 182Pt (2+)
α (0,13%) 178Ir
183Au 79 104 182,967593(11) 42,8(10) s β+ (99,2%) 183Pt 5/2
α (0,8%) 179Ir
183m1Au 73,3(4) keV > 1 µs 1/2+
183m2Au 230,6(6) keV < 1 µs 11/2
184Au 79 105 183,967452(24) 20,6(9) s β+ 184Pt 5+
184mAu 68,46(1) keV 47,6(14) s β+ (70%) 184Pt 2+
IT (30%) 184Au
α (0,013%) 180Ir
185Au 79 106 184,965789(28) 4,25(6) min β+ (99,74%) 185Pt 5/2
α (0,26%) 181Ir
185mAu 100(100) keV 6,8(3) min 1/2+
186Au 79 107 185,965953(23) 10,7(5) min β+ (99,9992%) 186Pt 3
α (8 × 10−4%) 182Ir
186mAu 227,77(7) keV 110(10) ns 2+
187Au 79 108 186,964568(27) 8,4(3) min β+ (99,997%) 187Pt 1/2+
α (0,003%) 183Ir
187mAu 120,51(16) keV 2,3(1) s IT 187Au 9/2
188Au 79 109 187,965324(22) 8,84(6) min β+ 188Pt 1
189Au 79 110 188,963948(22) 28,7(3) min β+ (99,9997%) 189Pt 1/2+
α (3 × 10−4%) 185Ir
189m1Au 247,23(16) keV 4,59(11) min β+ 189Pt 11/2
IT (zelden) 189Au
189m2Au 325,11(16) keV 190(15) ns 9/2
189m3Au 2554,7(12) keV 242(10) ns 31/2+
190Au 79 111 189,964700(17) 42,8(10) min β+ 190Pt 1-
α (10−6%) 186Ir
190mAu 200(150) keV 125(20) ms IT 190Au 11
β+ (zelden) 190Pt
191Au 79 112 190,96370(4) 3,18(8) uur β+ 191Pt 3/2+
191m1Au 266,2(5) keV 920(110) ms IT 191Au (11/2)
191m2Au 2490(1) keV > 400 ns
192Au 79 113 191,964813(17) 4,94(9) uur β+ 192Pt 1
192m1Au 135,41(25) keV 29 ms IT 192Au 5+
192m2Au 431,6(5) keV 160(20) ms (11)
193Au 79 114 192,964150(11) 17,65(15) uur β+ (100%) 193Pt 3/2+
α (10−5%) 189It
193m1Au 290,19(3) keV 3,9(3) s IT (99,97%) 193Au 11/2
β+ (0,03%) 193Pt
193m2Au 2486,5(6) keV 150(50) ns (31/2+)
194Au 79 115 193,965365(11) 38,02(10) uur β+ 194Pt 1
194m1Au 107,4(5) keV 600(8) ms IT 194Au (5+)
194m2Au 475,8(6) keV 420(10) ms (11)
195Au 79 116 194,9650346(14) 186,098(47) d EV 195Pt 3/2+
195mAu 318,58(4) keV 30,5(2) s IT 195Au 11/2
196Au 79 117 195,966570(3) 6,1669(6) dagen β+ (93,05%) 196Pt 2
β (6,95%) 196Hg
196m1Au 84,660(20) keV 8,1(2) s IT 196Au 5+
196m2Au 595,66(4) keV 9,6(1) uur 12
197Au 79 118 196,9665687(6) stabiel 3/2+ 1,0000
197mAu 409,15(8) keV 7,73(6) s IT 197Au 11/2
198Au 79 119 197,9682423(6) 2,69517(21) dagen β 198Hg 2
198m1Au 312,2200(20) keV 124(4) ns 5+
198m2Au 811,7(15) keV 2,27(2) dagen IT 198Au (12)
199Au 79 120 198,9687652(6) 3,139(7) dagen β 199Hg 3/2+
199mAu 548,9368(21) keV 440(30) µs 11/2
200Au 79 121 199,97073(5) 48,4(3) min β 200Hg 1
200mAu 970(70) keV 18,7(5) uur β (82%) 200Hg 12
IT (18%) 200Au
201Au 79 122 200,971657(3) 26(1) min β 201Hg 3/2+
202Au 79 123 201,97381(18) 28,8(19) s β 202Hg (1)
203Au 79 124 202,975155(3) 53(2) s β 203Hg 3/2+
204Au 79 125 203,97772(22) 39,8(9) s β 204Hg (2)
205Au 79 126 204,97987(32) 31(2) s β 205Hg 3/2+

Overzicht van isotopen per element

1 18
1 H 2 Periodiek systeem 13 14 15 16 17 He
2 Li Be De links verwijzen naar isotopen per element B C N O F Ne
3 Na Mg 3 4 5 6 7 8 9 10 11 12 Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 Cs Ba Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7 Fr Ra ↓↓ Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
Lanthaniden La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actiniden Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

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