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 |
| 58 | 68.077% | STABLE |
| 60 | 26.223% | STABLE |
| 61 | 1.1399% | STABLE |
| 62 | 3.6346% | STABLE |
| 64 | 0.9255% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 48 | 2.1 milliseconds | Double Proton Emission | ~ 70.00% |
| Electron Capture | No Data Available | ||
| 49 | 7.5 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 83.00% | ||
| 50 | 18.5 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 86.70% | ||
| Electron Capture with delayed Double Proton Emission | No Data Available | ||
| 51 | 23.8 milliseconds | Electron Capture | No Data Available |
| Electron Capture with delayed Proton Emission | 87.2% | ||
| 52 | 40.8 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 31.40% | ||
| 53 | 55.2 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 23.40% | ||
| 54 | 104 milliseconds | Electron Capture | 100.00% |
| 55 | 204.7 milliseconds | Electron Capture | 100.00% |
| 56 | 6.075 days | Electron Capture | 100.00% |
| 57 | 35.60 hours | Electron Capture | 100.00% |
| 58 | STABLE | - | - |
| 59 | 7.6×10+4 years | Electron Capture | 100.00% |
| 60 | STABLE | - | - |
| 61 | STABLE | - | - |
| 62 | STABLE | - | - |
| 63 | 101.2 years | Beta-minus Decay | 100.00% |
| 64 | STABLE | - | - |
| 65 | 2.5175 hours | Beta-minus Decay | 100.00% |
| 66 | 54.6 hours | Beta-minus Decay | 100.00% |
| 67 | 21 seconds | Beta-minus Decay | 100.00% |
| 68 | 29 seconds | Beta-minus Decay | 100.00% |
| 68m | 0.86 milliseconds | Isomeric Transition | 100.00% |
| 69 | 11.2 seconds | Beta-minus Decay | 100.00% |
| 69m | 3.5 seconds | Beta-minus Decay | 100.00% |
| 70 | 6.0 seconds | Beta-minus Decay | 100.00% |
| 71 | 2.56 seconds | Beta-minus Decay | 100.00% |
| 71m | 2.3 seconds | Beta-minus Decay | 100.00% |
| 72 | 1.57 seconds | Beta-minus Decay | 100.00% |
| 73 | 0.84 seconds | Beta-minus Decay | 100.00% |
| 74 | 0.68 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 75 | 344 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 10.00% | ||
| 76 | 0.238 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 77 | 128 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 30.00% | ||
| 78 | 0.11 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 79 | > 635 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| Beta-minus Decay with delayed Double Neutron Emission | No Data Available |
This page is maintained by Steve Gagnon.