It's Elemental
Isotopes of the Element Silicon
Silicon
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 |
| 28 | 92.223% | STABLE |
| 29 | 4.685% | STABLE |
| 30 | 3.092% | STABLE |
Known Isotopes
| Mass Number | Half-life | Decay Mode | Branching Percentage |
| 22 | 29 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 32.00% | ||
| 23 | 42.3 milliseconds | Electron Capture with delayed Proton Emission | 71.00% |
| Electron Capture with delayed Double Proton Emission | 3.60% | ||
| Electron Capture | 100.00% | ||
| 24 | 140.5 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 45.00% | ||
| 25 | 220 milliseconds | Electron Capture | 100.00% |
| Electron Capture with delayed Proton Emission | 35.00% | ||
| 26 | 2.229 seconds | Electron Capture | 100.00% |
| 27 | 4.15 seconds | Electron Capture | 100.00% |
| 28 | STABLE | - | - |
| 29 | STABLE | - | - |
| 30 | STABLE | - | - |
| 31 | 157.3 minutes | Beta-minus Decay | 100.00% |
| 32 | 153 years | Beta-minus Decay | 100.00% |
| 33 | 6.11 seconds | Beta-minus Decay | 100.00% |
| 34 | 2.77 seconds | Beta-minus Decay | 100.00% |
| 35 | 0.78 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 5.00% | ||
| 36 | 0.45 seconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | < 10.00% | ||
| 37 | 90 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | 17.00% | ||
| 38 | > 1 microseconds | Beta-minus Decay with delayed Neutron Emission | No Data Available |
| Beta-minus Decay | No Data Available | ||
| 39 | 47.5 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 40 | 33.0 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 41 | 20.0 milliseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission (suspected) | No Data Available | ||
| 42 | 12.5 milliseconds | Beta-minus Decay | 100.00% |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 43 | > 60 nanoseconds | Beta-minus Decay with delayed Neutron Emission | No Data Available |
| Beta-minus Decay | No Data Available | ||
| 44 | > 360 nanoseconds | Beta-minus Decay | No Data Available |
| Beta-minus Decay with delayed Neutron Emission | No Data Available | ||
| 45 | No Data Available | No Data Available | No Data Available |
Citation and linking information
For questions about this page, please contact Steve Gagnon.