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Manganese

Isotopes of the Element Chromium

[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
504.345%> 1.3×10+18 years
5283.789%STABLE
539.501%STABLE
542.365%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
4213.3 millisecondsElectron Capture with
delayed Proton Emission
94.40%
Electron Capture100.00%
4320.6 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
81.00%
Electron Capture with
delayed Double Proton Emission
7.10%
Electron Capture with
delayed Triple Proton Emission
0.08%
4442.8 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
14.00%
4560.9 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
34.40%
460.26 secondsElectron Capture100.00%
47500 millisecondsElectron Capture100.00%
4821.56 hoursElectron Capture100.00%
4942.3 minutesElectron Capture100.00%
50> 1.3×10+18 yearsDouble Electron CaptureNo Data Available
5127.7025 daysElectron Capture100.00%
52STABLE--
53STABLE--
54STABLE--
553.497 minutesBeta-minus Decay100.00%
565.94 minutesBeta-minus Decay100.00%
5721.1 secondsBeta-minus Decay100.00%
587.0 secondsBeta-minus Decay100.00%
591.05 secondsBeta-minus Decay100.00%
600.49 secondsBeta-minus Decay100.00%
61243 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
62206 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
63129 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
6442 millisecondsBeta-minus Decay100.00%
6528 millisecondsBeta-minus Decay100.00%
6623 millisecondsBeta-minus Decay100.00%
67No Data AvailableBeta-minus Decay (suspected)No Data Available
68> 360 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available