It's Elemental
Isotopes of the Element Chlorine
Chlorine
Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.
Isotopes With A Known Natural Abundance
| Mass Number | Natural Abundance | Half-life |
| 35 | 75.76% | STABLE |
| 37 | 24.24% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 28 | No Data Available | Proton Emission (suspected) | No Data Available |
| 29 | < 20 nanoseconds | Proton Emission | No Data Available |
| 30 | < 30 nanoseconds | Proton Emission | No Data Available |
| 31 | 150 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 0.70% | ||
| 32 | 298 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Alpha Decay | 0.05% | ||
| Electron Capture with delayed Proton Emission | 0.03% | ||
| 33 | 2.511 seconds | Electron Capture | 100.00% |
| 34 | 1.5264 seconds | Electron Capture | 100.00% |
| 34m | 32.00 minutes | Electron Capture | 55.40% |
| Isomeric Transition | 44.60% | ||
| 35 | STABLE | - | - |
| 36 | 3.01×10+5 years | Electron Capture | 1.90% |
| Beta-minus Decay | 98.10% | ||
| 37 | STABLE | - | - |
| 38 | 37.24 minutes | Beta-minus Decay | 100.00% |
| 38m | 715 milliseconds | Isomeric Transition | 100.00% |
| 39 | 56.2 minutes | Beta-minus Decay | 100.00% |
| 40 | 1.35 minutes | Beta-minus Decay | 100.00% |
| 41 | 38.4 seconds | Beta-minus Decay | 100.00% |
| 42 | 6.8 seconds | Beta-minus Decay | 100.00% |
| 43 | 3.13 seconds | Beta-minus Decay | 100.00% |
| 44 | 0.56 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 8.00% | ||
| 45 | 413 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 24.00% | ||
| 46 | 232 milliseconds | Beta-minus Decay with delayed Neutron Emission | 60.00% |
| Beta-minus Decay | 100.00% | ||
| 47 | 101 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | > 0.00% | ||
| 48 | >= 200 nanoseconds | Beta-minus Decay | No Data Available |
| 49 | >= 170 nanoseconds | Beta-minus Decay | No Data Available |
| 50 | > 620 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 51 | > 200 nanoseconds | Beta-minus Decay | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.