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 |
| 19 | 100% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 14 | No Data Available | Proton Emission | No Data Available |
| 15 | 4.557×10-22 seconds | Proton Emission | 100.00% |
| 16 | 1.139×10-20 seconds | Proton Emission | 100.00% |
| 17 | 64.49 seconds | Electron Capture | 100.00% |
| 18 | 109.77 minutes | Electron Capture | 100.00% |
| 19 | STABLE | - | - |
| 20 | 11.07 seconds | Beta-minus Decay | 100.00% |
| 21 | 4.158 seconds | Beta-minus Decay | 100.00% |
| 22 | 4.23 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 11.00% | ||
| 23 | 2.23 seconds | Beta-minus Decay | 100.00% |
| 24 | 390 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 5.90% | ||
| 25 | 80 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 23.10% | ||
| 26 | 9.7 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 11.00% | ||
| 27 | 5.0 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 77.00% | ||
| 28 | < 40 nanoseconds | No Data Available | No Data Available |
| 29 | 2.5 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 100.00% | ||
| 30 | No Data Available | Neutron Emission | No Data Available |
| 31 | > 250 nanoseconds | Beta-minus Decay with delayed Neutron Emission | No Data Available |
| Beta-minus Decay | No Data Available |
This page is maintained by Steve Gagnon.