It's Elemental
Isotopes of the Element Gold
Gold
Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.
Isotopes With A Known Natural Abundance
| Mass Number | Natural Abundance | Half-life |
| 197 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 169 | No Data Available | Proton Emission (suspected) | No Data Available |
| Alpha Decay (suspected) | No Data Available | ||
| 170 | 286 microseconds | Proton Emission | 89.00% |
| Alpha Decay | 11.00% | ||
| 170m | 617 microseconds | Proton Emission | 58.00% |
| Alpha Decay | 42.00% | ||
| 171 | 17 microseconds | Proton Emission | 100.00% |
| Alpha Decay | No Data Available | ||
| 171m | 1.02 milliseconds | Alpha Decay | 54.00% |
| Proton Emission | 46.00% | ||
| 172 | 22 milliseconds | Alpha Decay | 100.00% |
| Electron Capture | No Data Available | ||
| Proton Emission | No Data Available | ||
| 172m | 7.7 milliseconds | Alpha Decay | 100.00% |
| Proton Emission | < 0.02% | ||
| Electron Capture | No Data Available | ||
| 173 | 25 milliseconds | Alpha Decay | 94.00% |
| Electron Capture | No Data Available | ||
| Proton Emission | No Data Available | ||
| 173m | 14.0 milliseconds | Alpha Decay | 92.00% |
| Proton Emission | No Data Available | ||
| Electron Capture | No Data Available | ||
| 174 | 139 milliseconds | Alpha Decay | > 0.00% |
| 175 | No Data Available | Electron Capture (suspected) | No Data Available |
| Alpha Decay (suspected) | No Data Available | ||
| 175m | 156 milliseconds | Alpha Decay | 94.00% |
| Electron Capture | 6.00% | ||
| 176 | No Data Available | No Data Available | No Data Available |
| 176m | 1.05 seconds | Alpha Decay | No Data Available |
| Electron Capture | No Data Available | ||
| 176m1 | 1.36 seconds | No Data Available | No Data Available |
| 177 | 1.53 seconds | Alpha Decay | 40.00% |
| Electron Capture | No Data Available | ||
| 177m | 1.00 seconds | Alpha Decay | 66.00% |
| Electron Capture | No Data Available | ||
| 178 | 2.6 seconds | Electron Capture | <= 60.00% |
| Alpha Decay | >= 40.00% | ||
| 179 | 7.1 seconds | Electron Capture | 78.00% |
| Alpha Decay | 22.00% | ||
| 180 | 8.1 seconds | Alpha Decay | >= 1.80% |
| Electron Capture | <= 98.20% | ||
| 181 | 13.7 seconds | Electron Capture | 97.30% |
| Alpha Decay | 2.70% | ||
| 182 | 15.5 seconds | Electron Capture | 99.87% |
| Alpha Decay | 0.13% | ||
| 183 | 42.8 seconds | Electron Capture | 99.45% |
| Alpha Decay | 0.55% | ||
| 184 | 20.6 seconds | Electron Capture | 100.00% |
| Alpha Decay | <= 0.02% | ||
| 184m | 47.6 seconds | Alpha Decay | <= 0.02% |
| Electron Capture | 70.00% | ||
| Isomeric Transition | 30.00% | ||
| 185 | 4.25 minutes | Electron Capture | 99.74% |
| Alpha Decay | 0.26% | ||
| 185m | 6.8 minutes | Electron Capture | < 100.00% |
| Isomeric Transition | No Data Available | ||
| 186 | 10.7 minutes | Electron Capture | 100.00% |
| Alpha Decay | 8.0×10-4 % | ||
| 187 | 8.3 minutes | Electron Capture | 100.00% |
| Alpha Decay | 3.0×10-3 % | ||
| 187m | 2.3 seconds | Isomeric Transition | 100.00% |
| 188 | 8.84 minutes | Electron Capture | 100.00% |
| 189 | 28.7 minutes | Electron Capture | 100.00% |
| Alpha Decay | < 3.0×10-5 % | ||
| 189m | 4.59 minutes | Electron Capture | 100.00% |
| 190 | 42.8 minutes | Electron Capture | 100.00% |
| Alpha Decay | < 1.0×10-6 % | ||
| 190m | 125 milliseconds | Isomeric Transition | 100.00% |
| 191 | 3.18 hours | Electron Capture | 100.00% |
| 191m | 0.92 seconds | Isomeric Transition | 100.00% |
| 192 | 4.94 hours | Electron Capture | 100.00% |
| 192m | 29 milliseconds | Isomeric Transition | 100.00% |
| 192m1 | 160 milliseconds | Isomeric Transition | 100.00% |
| 193 | 17.65 hours | Electron Capture | 100.00% |
| 193m | 3.9 seconds | Isomeric Transition | 99.97% |
| Electron Capture | ~ 0.03% | ||
| 194 | 38.02 hours | Electron Capture | 100.00% |
| 194m | 600 milliseconds | Isomeric Transition | 100.00% |
| 194m1 | 420 milliseconds | Isomeric Transition | 100.00% |
| 195 | 186.098 days | Electron Capture | 100.00% |
| 195m | 30.5 seconds | Isomeric Transition | 100.00% |
| 196 | 6.1669 days | Electron Capture | 93.00% |
| Beta-minus Decay | 7.00% | ||
| 196m | 8.1 seconds | Isomeric Transition | 100.00% |
| 196m1 | 9.6 hours | Isomeric Transition | 100.00% |
| 197 | STABLE | - | - |
| 197m | 7.73 seconds | Isomeric Transition | 100.00% |
| 198 | 2.6948 days | Beta-minus Decay | 100.00% |
| 198m | 2.272 days | Isomeric Transition | 100.00% |
| 199 | 3.139 days | Beta-minus Decay | 100.00% |
| 199m | 0.44 milliseconds | Isomeric Transition | 100.00% |
| 200 | 48.4 minutes | Beta-minus Decay | 100.00% |
| 200m | 18.7 hours | Isomeric Transition | 16.00% |
| Beta-minus Decay | 84.00% | ||
| 201 | 26.0 minutes | Beta-minus Decay | 100.00% |
| 202 | 28.4 seconds | Beta-minus Decay | 100.00% |
| 203 | 60 seconds | Beta-minus Decay | 100.00% |
| 204 | 39.8 seconds | Beta-minus Decay | 100.00% |
| 205 | 32.5 seconds | Beta-minus Decay | 100.00% |
| 205m | 6 seconds | Beta-minus Decay | No Data Available |
| Isomeric Transition | No Data Available | ||
| 206 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| 207 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 208 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 209 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 210 | > 300 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.