Most of the isotope data on this site has been obtained from the National Nuclear Data Center.
Naturally Occurring Isotopes
| Mass Number | Natural Abundance | Half-life |
| 92 | 14.53% | STABLE |
| 94 | 9.15% | STABLE |
| 95 | 15.84% | STABLE |
| 96 | 16.67% | STABLE |
| 97 | 9.60% | STABLE |
| 98 | 24.39% | STABLE |
| 100 | 9.82% | 7.3×10+18 years |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 83 | 6 milliseconds | Electron Capture | 100.00% |
| 84 | 2.3 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | No Data Available | ||
| 85 | 3.2 seconds | Electron Capture | No Data Available |
| Electron Capture with delayed Proton Emission | ~ 0.14% | ||
| 86 | 19.1 seconds | Electron Capture | 100.00% |
| 87 | 14.02 seconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 15.00% | ||
| 88 | 8.0 minutes | Electron Capture | 100.00% |
| 89 | 2.11 minutes | Electron Capture | 100.00% |
| 89m | 190 milliseconds | Isomeric Transition | 100.00% |
| 90 | 5.56 hours | Electron Capture | 100.00% |
| 91 | 15.49 minutes | Electron Capture | 100.00% |
| 91m | 64.6 seconds | Electron Capture | 50.00% |
| Isomeric Transition | 50.00% | ||
| 92 | STABLE | - | - |
| 93 | 4.0×10+3 years | Electron Capture | 100.00% |
| 93m | 6.85 hours | Isomeric Transition | 99.88% |
| Electron Capture | 0.12% | ||
| 94 | STABLE | - | - |
| 95 | STABLE | - | - |
| 96 | STABLE | - | - |
| 97 | STABLE | - | - |
| 98 | STABLE | - | - |
| 99 | 65.976 hours | Beta-minus Decay | 100.00% |
| 100 | 7.3×10+18 years | Double Beta-minus Decay | 100.00% |
| 101 | 14.61 minutes | Beta-minus Decay | 100.00% |
| 102 | 11.3 minutes | Beta-minus Decay | 100.00% |
| 103 | 67.5 seconds | Beta-minus Decay | 100.00% |
| 104 | 60 seconds | Beta-minus Decay | 100.00% |
| 105 | 35.6 seconds | Beta-minus Decay | 100.00% |
| 106 | 8.73 seconds | Beta-minus Decay | 100.00% |
| 107 | 3.5 seconds | Beta-minus Decay | 100.00% |
| 108 | 1.09 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 0.50% | ||
| 109 | 660 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 1.30% | ||
| 110 | 0.27 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 2.00% | ||
| 111 | 220 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | <= 12% | ||
| 112 | 120 milliseconds | Beta-minus Decay | No Data Available |
| 113 | 78 milliseconds | Beta-minus Decay | No Data Available |
| 114 | 60 milliseconds | Beta-minus Decay | No Data Available |
| 115 | 51 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 116 | > 391 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 117 | > 393 nanoseconds | Beta-minus Decay (suspected) | No Data Available |
| 117m | 393 nanoseconds | Beta-minus Decay with delayed Neutron Emission (suspected) | No Data Available |
| 117m1 | > 393 nanoseconds | Beta-minus Decay with delayed Double Neutron Emission (suspected) | No Data Available |
This page is maintained by Steve Gagnon.