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 |
| 32 | 94.99% | STABLE |
| 33 | 0.75% | STABLE |
| 34 | 4.25% | STABLE |
| 36 | 0.01% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 26 | 79 nanoseconds | Double Proton Emission (suspected) | No Data Available |
| 27 | 15.5 milliseconds | Electron Capture with delayed Double Proton Emission | 1.10% |
| Electron Capture | 100.00% | ||
| Electron Capture with delayed Proton Emission | 2.30% | ||
| 28 | 125 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 20.70% | ||
| 29 | 187 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 47.00% | ||
| 30 | 1.178 seconds | Electron Capture | 100.00% |
| 31 | 2.572 seconds | Electron Capture | 100.00% |
| 32 | STABLE | - | - |
| 33 | STABLE | - | - |
| 34 | STABLE | - | - |
| 35 | 87.37 days | Beta-minus Decay | 100.00% |
| 36 | STABLE | - | - |
| 37 | 5.05 minutes | Beta-minus Decay | 100.00% |
| 38 | 170.3 minutes | Beta-minus Decay | 100.00% |
| 39 | 11.5 seconds | Beta-minus Decay | 100.00% |
| 40 | 8.8 seconds | Beta-minus Decay | 100.00% |
| 41 | 1.99 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 42 | 1.03 seconds | Beta-minus Decay | 100.00% |
| 43 | 0.28 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 40.00% | ||
| 44 | 100 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 18.00% | ||
| 45 | 68 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 54.00% | ||
| 46 | 50 milliseconds | Beta-minus Decay | 100.00% |
| 47 | No Data Available | No Data Available | No Data Available |
| 48 | >= 200 nanoseconds | Beta-minus Decay | No Data Available |
| 49 | < 200 nanoseconds | Neutron Emission | No Data Available |
This page is maintained by Steve Gagnon.