It's Elemental
Isotopes of the Element Carbon
Carbon
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 |
| 12 | 98.93% | STABLE |
| 13 | 1.07% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 8 | 1.981×10-21 seconds | Proton Emission | 100.00% |
| Alpha Decay | No Data Available | ||
| 9 | 126.5 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 61.60% | ||
| Electron Capture with delayed Alpha Decay | 38.40% | ||
| 10 | 19.308 seconds | Electron Capture | 100.00% |
| 11 | 20.334 minutes | Electron Capture | 100.00% |
| 12 | STABLE | - | - |
| 13 | STABLE | - | - |
| 14 | 5700 years | Beta-minus Decay | 100.00% |
| 15 | 2.449 seconds | Beta-minus Decay | 100.00% |
| 16 | 0.747 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 99.00% | ||
| 17 | 193 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 32.00% | ||
| 18 | 92 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 31.50% | ||
| 19 | 49 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | 61.00% | ||
| 20 | 14 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 72.00% | ||
| 21 | 30 nanoseconds | Neutron Emission (suspected) | No Data Available |
| 22 | 6.1 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 61.00% | ||
| Beta-minus Decay with delayed Double Neutron Emission | < 37.00% | ||
| 23 | No Data Available | No Data Available | No Data Available |
Citation and linking information
For questions about this page, please contact Carol McKisson.