Isotop emas

Isotop utama emas
Iso­top Peluruhan
kelim­pahan waktu paruh (t1/2) mode pro­duk
195Au sintetis 186,10 hri ε 195Pt
196Au sintetis 6,183 hri ε 196Pt
β 196Hg
197Au 100% stabil
198Au sintetis 2,69517 hri β 198Hg
199Au sintetis 3,169 hri β 199Hg
Berat atom standar Ar°(Au)
  • 196,966570±0,000004
  • 196,97±0,01 (diringkas)[1]

Emas (79Au) memiliki satu isotop stabil, 197Au, dan 36 radioisotop, dengan 195Au menjadi yang paling stabil dengan waktu paruh 186 hari. Emas saat ini dianggap sebagai unsur monoisotop terberat. Bismut sebelumnya memegang gelar tersebut sampai peluruhan alfa dari isotop 209Bi teramati. Semua isotop emas bersifat radioaktif atau, dalam kasus 197Au, stabil secara pengamatan, yang berarti bahwa 197Au diprediksi bersifat radioaktif tetapi tidak ada peluruhan aktual yang teramati.

Daftar isotop

Nuklida
[n 1]
Z N Massa isotop (Da)
[n 2][n 3]
Waktu paruh
[n 4]
Mode
peluruhan

[n 5]
Isotop
anak

[n 6][n 7]
Spin dan
paritas
[n 8][n 4]
Kelimpahan alami (fraksi mol)
Energi eksitasi[n 4] Proporsi normal Rentang variasi
169Au 79 90 168,99808(32)# 150# μdtk 1/2+#
170Au 79 91 169,99612(22)# 310(50) μdtk
[286(+50−40) μdtk]
(2−)
170mAu 275(14) keV 630(60) μdtk
[0,62(+6−5) mdtk]
(9+)
171Au 79 92 170,991879(28) 30(5) μdtk p 170Pt (1/2+)
α (langka) 167Ir
171mAu 250(16) keV 1,014(19) mdtk α (54%) 167Ir 11/2−
p (46%) 170Pt
172Au 79 93 171,99004(17)# 4,7(11) mdtk α (98%) 168Ir tinggi
p (2%) 171Pt
173Au 79 94 172,986237(28) 25(1) mdtk α 169Ir (1/2+)
β+ (langka) 173Pt
173mAu 214(23) keV 14,0(9) mdtk α (96%) 169Ir (11/2−)
β+ (4%) 173Pt
174Au 79 95 173,98476(11)# 139(3) mdtk α 170Ir rendah
β+ (langka) 174Pt
174mAu 360(70)# keV 171(29) mdtk tinggi
175Au 79 96 174,98127(5) 100# mdtk α (82%) 171Ir 1/2+#
β+ (18%) 175Pt
175mAu 200(30)# keV 156(3) mdtk α 171Ir 11/2−#
β+ 175Pt
176Au 79 97 175,98010(11)# 1,08(17) dtk
[0,84(+17−14) dtk]
α (60%) 172Ir (5−)
β+ (40%) 176Pt
176mAu 150(100)# keV 860(160) mdtk (7+)
177Au 79 98 176,976865(14) 1,462(32) dtk β+ (60%) 177Pt (1/2+, 3/2+)
α (40%) 173Ir
177mAu 216(26) keV 1,180(12) dtk 11/2−
178Au 79 99 177,97603(6) 2,6(5) dtk β+ (60%) 178Pt
α (40%) 174Ir
179Au 79 100 178,973213(18) 7,1(3) dtk β+ (78%) 179Pt 5/2−#
α (22%) 175Ir
179mAu 99(16) keV (11/2−)
180Au 79 101 179,972521(23) 8,1(3) dtk β+ (98,2%) 180Pt
α (1,8%) 176Ir
181Au 79 102 180,970079(21) 13,7(14) dtk β+ (97,3%) 181Pt (3/2−)
α (2,7%) 177Ir
182Au 79 103 181,969618(22) 15,5(4) dtk β+ (99,87%) 182Pt (2+)
α (0,13%) 178Ir
183Au 79 104 182,967593(11) 42,8(10) dtk β+ (99,2%) 183Pt (5/2)−
α (0,8%) 179Ir
183m1Au 73,3(4) keV >1 μdtk (1/2)+
183m2Au 230,6(6) keV <1 μdtk (11/2)−
184Au 79 105 183,967452(24) 20,6(9) dtk β+ 184Pt 5+
184mAu 68,46(1) keV 47,6(14) dtk β+ (70%) 184Pt 2+
IT (30%) 184Au
α (0,013%) 180Ir
185Au 79 106 184,965789(28) 4,25(6) mnt β+ (99,74%) 185Pt 5/2−
α (0,26%) 181Ir
185mAu 100(100)# keV 6,8(3) mnt 1/2+#
186Au 79 107 185,965953(23) 10,7(5) mnt β+ (99,9992%) 186Pt 3−
α (8×10−4%) 182Ir
186mAu 227,77(7) keV 110(10) ndtk 2+
187Au 79 108 186,964568(27) 8,4(3) mnt β+ (99,997%) 187Pt 1/2+
α (0,003%) 183Ir
187mAu 120,51(16) keV 2,3(1) dtk IT 187Au 9/2−
188Au 79 109 187,965324(22) 8,84(6) mnt β+ 188Pt 1(−)
189Au 79 110 188,963948(22) 28,7(3) mnt β+ (99,9997%) 189Pt 1/2+
α (3×10−4%) 185Ir
189m1Au 247,23(16) keV 4,59(11) mnt β+ 189Pt 11/2−
IT (langka) 189Au
189m2Au 325,11(16) keV 190(15) ndtk 9/2−
189m3Au 2554,7(12) keV 242(10) ndtk 31/2+
190Au 79 111 189,964700(17) 42,8(10) mnt β+ 190Pt 1−
α (10−6%) 186Ir
190mAu 200(150)# keV 125(20) mdtk IT 190Au 11−#
β+ (langka) 190Pt
191Au 79 112 190,96370(4) 3,18(8) jam β+ 191Pt 3/2+
191m1Au 266,2(5) keV 920(110) mdtk IT 191Au (11/2−)
191m2Au 2490(1) keV >400 ndtk
192Au 79 113 191,964813(17) 4,94(9) jam β+ 192Pt 1−
192m1Au 135,41(25) keV 29 mdtk IT 192Au (5#)+
192m2Au 431,6(5) keV 160(20) mdtk (11−)
193Au 79 114 192,964150(11) 17,65(15) jam β+ (100%) 193Pt 3/2+
α (10−5%) 189Ir
193m1Au 290,19(3) keV 3,9(3) dtk IT (99,97%) 193Au 11/2−
β+ (0,03%) 193Pt
193m2Au 2486,5(6) keV 150(50) ndtk (31/2+)
194Au 79 115 193,965365(11) 38,02(10) jam β+ 194Pt 1−
194m1Au 107,4(5) keV 600(8) mdtk IT 194Au (5+)
194m2Au 475,8(6) keV 420(10) mdtk (11−)
195Au 79 116 194,9650346(14) 186,098(47) hri EC 195Pt 3/2+
195mAu 318,58(4) keV 30,5(2) dtk IT 195Au 11/2−
196Au 79 117 195,966570(3) 6,1669(6) hri EC (93,05%) 196Pt 2−
β (6,95%) 196Hg
196m1Au 84,660(20) keV 8,1(2) dtk IT 196Au 5+
196m2Au 595,66(4) keV 9,6(1) jam 12−
197Au[n 9] 79 118 196,9665687(6) Stabil Secara Pengamatan[n 10] 3/2+ 1,0000
197mAu 409,15(8) keV 7,73(6) dtk IT 197Au 11/2−
198Au 79 119 197,9682423(6) 2,69517(21) hri β 198Hg 2−
198m1Au 312,2200(20) keV 124(4) ndtk 5+
198m2Au 811,7(15) keV 2,27(2) hri IT 198Au (12−)
199Au 79 120 198,9687652(6) 3,139(7) hri β 199Hg 3/2+
199mAu 548,9368(21) keV 440(30) μdtk (11/2)−
200Au 79 121 199,97073(5) 48,4(3) mnt β 200Hg 1(−)
200mAu 970(70) keV 18,7(5) jam β (82%) 200Hg 12−
IT (18%) 200Au
201Au 79 122 200,971657(3) 26(1) mnt β 201Hg 3/2+
201m1Au 594(5) keV 730(630) μdtk (11/2-)
201m2Au 1610(5) keV 5,6(2,4)  μdtk (11/2-)
202Au 79 123 201,97381(18) 28,8(19) dtk β 202Hg (1−)
203Au 79 124 202,975155(3) 60(6) dtk β 203Hg 3/2+
203mAu 641(3) keV 140(44) μdtk IT 203Au 11/2−#
204Au 79 125 203,97772(22)# 38,3(1,3) dtk β 204Hg (2−)
204mAu 3816(1000)# keV 2,1(0,3) μdtk IT 204Au 16+#
205Au 79 126 204,97985(21)# 32,5(1,4) dtk β 205Hg 3/2+#
205m1Au 907(5) keV 6(2) dtk 11/2−#
205m2Au 2850(5) keV 163(5) ndtk 19/2+#
206Au 79 127 205,98474(32)# 47(11) dtk β 206Hg (5+, 6+)
Header & footer tabel ini:  view 
  1. ^ mAu – Isomer nuklir tereksitasi.
  2. ^ ( ) – Ketidakpastian (1σ) diberikan dalam bentuk ringkas dalam tanda kurung setelah digit terakhir yang sesuai.
  3. ^ # – Massa atom bertanda #: nilai dan ketidakpastian yang diperoleh bukan dari data eksperimen murni, tetapi setidaknya sebagian dari tren dari Permukaan Massa (trends from the Mass Surface, TMS).
  4. ^ a b c # – Nilai yang ditandai # tidak murni berasal dari data eksperimen, tetapi setidaknya sebagian dari tren nuklida tetangga (trends of neighboring nuclides, TNN).
  5. ^ Mode peluruhan:
    EC: Penangkapan elektron
    IT: Transisi isomerik


    p: Emisi proton
  6. ^ Simbol miring tebal sebagai anak – Produk anak hampir stabil.
  7. ^ Simbol tebal sebagai anak – Produk anak stabil.
  8. ^ ( ) nilai spin – Menunjukkan spin dengan argumen penempatan yang lemah.
  9. ^ Bahan potensial untuk bom bergaram
  10. ^ Diyakini mengalami peluruhan α menjadi 193Ir

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