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 |
| 59 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 47 | No Data Available | No Data Available | No Data Available |
| 48 | No Data Available | No Data Available | No Data Available |
| 49 | No Data Available | No Data Available | No Data Available |
| 50 | 38.8 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 70.50% | ||
| Electron Capture with delayed Double Proton Emission | No Data Available | ||
| 51 | > 200 nanoseconds | Electron Capture | No Data Available |
| 52 | 115 milliseconds | Electron Capture | 100.00% |
| 53 | 240 milliseconds | Electron Capture | 100.00% |
| 53m | 247 milliseconds | Electron Capture | ~ 98.50% |
| Proton Emission | ~ 1.50% | ||
| 54 | 193.28 milliseconds | Electron Capture | 100.00% |
| 54m | 1.48 minutes | Electron Capture | 100.00% |
| 55 | 17.53 hours | Electron Capture | 100.00% |
| 56 | 77.236 days | Electron Capture | 100.00% |
| 57 | 271.74 days | Electron Capture | 100.00% |
| 58 | 70.86 days | Electron Capture | 100.00% |
| 58m | 9.10 hours | Isomeric Transition | 100.00% |
| 59 | STABLE | - | - |
| 60 | 1925.28 days | Beta-minus Decay | 100.00% |
| 60m | 10.467 minutes | Isomeric Transition | 99.76% |
| Beta-minus Decay | 0.24% | ||
| 61 | 1.650 hours | Beta-minus Decay | 100.00% |
| 62 | 1.50 minutes | Beta-minus Decay | 100.00% |
| 62m | 13.91 minutes | Beta-minus Decay | > 99.00% |
| Isomeric Transition | < 1.00% | ||
| 63 | 27.4 seconds | Beta-minus Decay | 100.00% |
| 64 | 0.30 seconds | Beta-minus Decay | 100.00% |
| 65 | 1.16 seconds | Beta-minus Decay | 100.00% |
| 66 | 0.20 seconds | Beta-minus Decay | 100.00% |
| 67 | 0.425 seconds | Beta-minus Decay | 100.00% |
| 68 | 0.199 seconds | Beta-minus Decay | 100.00% |
| 68m | 1.6 seconds | Beta-minus Decay | 100.00% |
| 69 | 229 milliseconds | Beta-minus Decay | 100.00% |
| 70 | 108 milliseconds | Beta-minus Decay | 100.00% |
| 70m | 0.50 seconds | Beta-minus Decay | 100.00% |
| 71 | 80 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | <= 6.00% | ||
| 72 | 59.9 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | >= 6.00% | ||
| 73 | 41 milliseconds | Beta-minus Decay | No Data Available |
| 74 | 25 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | ~ 18.00% | ||
| 75 | > 150 nanoseconds | Beta-minus Decay | 100.00% |
| 76 | > 634 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Double Neutron Emission | No Data Available | ||
| Beta-minus Decay with delayed Neutron Emission | No Data Available |
This page is maintained by Steve Gagnon.