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Isotopes of the Element Chlorine

[Click for Main Data]         Proton Emission     Neutron Emission     Electron Emission     Positron Emission

Most of the isotope data on this site has been obtained from the National Nuclear Data Center.

Naturally Occurring Isotopes

Mass NumberNatural AbundanceHalf-life
3575.76%STABLE
3724.24%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
28No Data AvailableProton Emission (suspected)   No Data Available
29< 20 nanosecondsProton EmissionNo Data Available
30< 30 nanosecondsProton EmissionNo Data Available
31150 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
0.70%
32298 millisecondsElectron Capture100.00%
Electron Capture with
delayed Alpha Decay
0.05%
Electron Capture with
delayed Proton Emission
0.03%
332.511 secondsElectron Capture100.00%
341.5264 secondsElectron Capture100.00%
34m32.00 minutesElectron Capture55.40%
Isomeric Transition44.60%
35STABLE--
363.01×10+5 yearsElectron Capture1.90%
Beta-minus Decay98.10%
37STABLE--
3837.24 minutesBeta-minus Decay100.00%
38m715 millisecondsIsomeric Transition100.00%
3956.2 minutesBeta-minus Decay100.00%
401.35 minutesBeta-minus Decay100.00%
4138.4 secondsBeta-minus Decay100.00%
426.8 secondsBeta-minus Decay100.00%
433.13 secondsBeta-minus Decay100.00%
440.56 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
< 8.00%
45413 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
24.00%
46232 millisecondsBeta-minus Decay with
delayed Neutron Emission
60.00%
Beta-minus Decay100.00%
47101 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
> 0.00%
48>= 200 nanoseconds   Beta-minus DecayNo Data Available
49>= 170 nanosecondsBeta-minus DecayNo Data Available
50> 620 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
51> 200 nanosecondsBeta-minus DecayNo Data Available