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Aluminum

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Isotopes of the Element Silicon

[Click for Main Data]

Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.

Naturally Occurring Isotopes

Mass NumberNatural AbundanceHalf-life
2892.223%STABLE
294.685%STABLE
303.092%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
2229 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
32.00%
2342.3 millisecondsElectron Capture with
delayed Proton Emission
71.00%
Electron Capture with
delayed Double Proton Emission
3.60%
Electron Capture100.00%
24140.5 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
45.00%
25220 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
35.00%
262.229 secondsElectron Capture100.00%
274.15 secondsElectron Capture100.00%
28STABLE--
29STABLE--
30STABLE--
31157.3 minutesBeta-minus Decay100.00%
32153 yearsBeta-minus Decay100.00%
336.11 secondsBeta-minus Decay100.00%
342.77 secondsBeta-minus Decay100.00%
350.78 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
< 5.00%
360.45 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
< 10.00%
3790 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
17.00%
38> 1 microsecondsBeta-minus Decay with
delayed Neutron Emission
No Data Available
Beta-minus DecayNo Data Available
3947.5 millisecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
4033.0 millisecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
4120.0 millisecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission (suspected)
No Data Available
4212.5 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
43> 60 nanosecondsBeta-minus Decay with
delayed Neutron Emission
No Data Available
Beta-minus DecayNo Data Available
44> 360 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
45No Data AvailableNo Data AvailableNo Data Available