Gold Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
169Au | 168.99808 (32) |
| 150 | us | -1,790 (300) | 7,716 (2) | A ? |
|
170Au | 169.99612 (22) |
| 310 | us | -3,610 (200) | 7,729 (1) | p | 85 10 |
171Au | 170.991879 (28) |
| 30 | us | -7,565 (26) | 7,754.1 (1.5) | p~100 |
|
172Au | 171.99004 (17) |
| 4.7 | ms | -9,280 (160) | 7,766 (1) | A | ? |
173Au | 172.986237 (28) |
| 25 | ms | -12,820 (26) | 7,788.2 (1.5) | A | 86 13 |
174Au | 173.98476 (11) |
| 139 | ms | -14,200 (100) | 7,798 (1) | A | 90 6 |
175Au | 174.981274 (46) |
| 100 | ms | -17,443 (42) | 7,817.8 (2.4) | A | ? |
176Au | 175.98010 (11) |
| 1.08 | s | -18,540 (100) | 7,825 (1) | A | ? |
177Au | 176.976865 (14) |
| 1.46 | s | -21,550 (13) | 7,843.89 (7.3) | A~100 |
|
178Au | 177.976032 (61) |
| 2.6 | s | -22,326 (57) | 7,849.5 (3.2) | B+ LE 60 |
|
179Au | 178.973213 (18) |
| 7.1 | s | -24,952 (17) | 7,865.43 (9.2) | B+ | 78.0 9 |
180Au | 179.972521 (23) |
| 8.1 | s | -25,596 (21) | 7,870.2 (1.2) | B+ LE 98.2 |
|
181Au | 180.970079 (21) |
| 13.7 | s | -27,871 (20) | 7,883.8 (1.1) | B+ | ? |
182Au | 181.969618 (22) |
| 15.5 | s | -28,301 (20) | 7,887.2 (1.1) | B+~100 |
|
183Au | 182.967593 (11) |
| 42.8 | s | -30,187 (10) | 7,898.54 (5.7) | B+~100 |
|
184Au | 183.967452 (24) |
| 20.6 | s | -30,319 (22) | 7,900.2 (1.2) | B+~100 |
|
185Au | 184.965789 (28) |
| 4.25 | m | -31,867 (26) | 7,909.5 (1.4) | B+~100 |
|
186Au | 185.965953 (23) |
| 10.7 | m | -31,715 (21) | 7,909.5 (1.1) | B+ | 100 |
187Au | 186.964568 (27) |
| 8.4 | m | -33,005 (25) | 7,917.3 (1.3) | B+~100 |
|
188Au | 187.965324 (22) |
| 8.84 | m | -32,301 (20) | 7,914.4 (1.1) | B+ | |
189Au | 188.963948 (22) |
| 28.7 | m | -33,582 (20) | 7,922.0 (1.1) | B+ | 100 |
190Au | 189.964700 (17) |
| 42.8 | m | -32,881 (16) | 7,919.09 (8.4) | B+ | 100 |
191Au | 190.963704 (40) |
| 3.18 | h | -33,809 (37) | 7,924.7 (1.9) | B+ | 100 |
192Au | 191.964813 (17) |
| 4.94 | h | -32,777 (16) | 7,920.13 (8.2) | B+ | 100 |
193Au | 192.964150 (11) |
| 17.65 | h | -33,394 (11) | 7,924.11 (5.5) | B+ | 100 |
194Au | 193.965365 (11) |
| 38.02 | h | -32,262 (10) | 7,919.03 (5.3) | B+ | 100 |
195Au | 194.9650346 (14) |
| 186.1 | d | -32,570.0 (1.3) | 7,921.392 (7) | EC | 100 |
196Au | 195.9665698 (32) |
| 6.1669 | d | -31,140.0 (3) | 7,914.86 (1.5) | B+ | 92.8 8 |
197Au | 196.96656866 (65) | 100 | stable |
| -31,141.09 (60) | 7,915.661 (3) |
|
|
198Au | 197.96824230 (64) |
| 2.69517 | d | -29,582.10 (60) | 7,908.573 (3) | B- | 100 |
199Au | 198.96876519 (65) |
| 3.139 | d | -29,095.04 (60) | 7,906.943 (3) | B- | 100 |
200Au | 199.970726 (53) |
| 48.4 | m | -27,269 (50) | 7,898.6 (2.5) | B- | 100 |
201Au | 200.9716572 (34) |
| 26 | m | -26,401.1 (3.2) | 7,895.18 (1.6) | B- | 100 |
202Au | 201.97381 (18) |
| 28.8 | s | -24,400 (170) | 7,886.1 (8.2) | B- | 100 |
203Au | 202.9751545 (33) |
| 53 | s | -23,143.4 (3.1) | 7,880.86 (1.5) | B- | 100 |
204Au | 203.97772 (22) |
| 39.8 | s | -20,750 (200) | 7,870 (1) | B- | 100 |
205Au | 204.97987 (32) |
| 31 | s | -18,750 (300) | 7,861 (1) | B- | 100 |
170mAu | 169.99612 (22) |
| 630 | us | -3,610 (200) | 7,729 (1) | p | 75 15 |
171mAu | 170.991879 (28) |
| 1.014 | ms | -7,565 (26) | 7,754.1 (1.5) | A | 54 4 |
173mAu | 172.986237 (28) |
| 14 | ms | -12,820 (26) | 7,788.2 (1.5) | A | 89 11 |
174mAu | 173.98476 (11) |
| 171 | ms | -14,200 (100) | 7,798 (1) | A | ? |
175mAu | 174.981274 (46) |
| 156 | ms | -17,443 (42) | 7,817.8 (2.4) | A | 82 17 |
176mAu | 175.98010 (11) |
| 860 | ms | -18,540 (100) | 7,825 (1) | A | ? |
177mAu | 176.976865 (14) |
| 1.18 | s | -21,550 (13) | 7,843.89 (7.3) | A~100 |
|
183mAu | 182.967593 (11) |
| >1 | us | -30,187 (10) | 7,898.54 (5.7) | IT | 100 |
184mAu | 183.967452 (24) |
| 47.6 | s | -30,319 (22) | 7,900.2 (1.2) | B+ | ? |
185mAu | 184.965789 (28) |
| 6.8 | m | -31,867 (26) | 7,909.5 (1.4) | B+<100 |
|
186mAu | 185.965953 (23) |
| 110 | ns | -31,715 (21) | 7,909.5 (1.1) | IT | 100 |
187mAu | 186.964568 (27) |
| 2.3 | s | -33,005 (25) | 7,917.3 (1.3) | IT | 100 |
189mAu | 188.963948 (22) |
| 4.59 | m | -33,582 (20) | 7,922.0 (1.1) | B+~100 |
|
190mAu | 189.964700 (17) |
| 125 | ms | -32,881 (16) | 7,919.09 (8.4) | IT~100 |
|
191mAu | 190.963704 (40) |
| 920 | ms | -33,809 (37) | 7,924.7 (1.9) | IT | 100 |
192mAu | 191.964813 (17) |
| 29 | ms | -32,777 (16) | 7,920.13 (8.2) | IT | 100 |
193mAu | 192.964150 (11) |
| 3.9 | s | -33,394 (11) | 7,924.11 (5.5) | IT~100 |
|
194mAu | 193.965365 (11) |
| 600 | ms | -32,262 (10) | 7,919.03 (5.3) | IT | 100 |
195mAu | 194.9650346 (14) |
| 30.5 | s | -32,570.0 (1.3) | 7,921.392 (7) | IT | 100 |
196mAu | 195.9665698 (32) |
| 8.1 | s | -31,140.0 (3) | 7,914.86 (1.5) | IT | 100 |
197mAu | 196.96656866 (65) |
| 7.73 | s | -31,141.09 (60) | 7,915.661 (3) | IT | 100 |
198mAu | 197.96824230 (64) |
| 124 | ns | -29,582.10 (60) | 7,908.573 (3) | IT | 100 |
199mAu | 198.96876519 (65) |
| 440 | us | -29,095.04 (60) | 7,906.943 (3) | IT | 100 |
200mAu | 199.970726 (53) |
| 18.7 | h | -27,269 (50) | 7,898.6 (2.5) | B- | 82 2 |
177m1Au | 176.976865 (14) |
| 7 | ns | -21,550 (13) | 7,843.89 (7.3) | IT | 100 |
184m1Au | 183.967452 (24) |
| 69 | ns | -30,319 (22) | 7,900.2 (1.2) | IT | 100 |
192m1Au | 191.964813 (17) |
| 160 | ms | -32,777 (16) | 7,920.13 (8.2) | IT | 100 |
194m1Au | 193.965365 (11) |
| 420 | ms | -32,262 (10) | 7,919.03 (5.3) | IT | 100 |
196m1Au | 195.9665698 (32) |
| 9.6 | h | -31,140.0 (3) | 7,914.86 (1.5) | IT | 100 |
198m1Au | 197.96824230 (64) |
| 2.27 | d | -29,582.10 (60) | 7,908.573 (3) | IT | 100 |
179mAu | 178.973213 (18) |
|
|
| -24,952 (17) | 7,865.43 (9.2) | 0 |
|
183m1Au | 182.967593 (11) |
| <1 | us | -30,187 (10) | 7,898.54 (5.7) | IT | 100 |
186m1Au | 185.965953 (23) |
| <2 | m | -31,715 (21) | 7,909.5 (1.1) | 0 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005