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Manganese

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Isotopes of the Element Iron

[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
545.845%STABLE
5691.754%STABLE
572.119%STABLE
580.282%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
451.89 millisecondsDouble Proton Emission70.00%
Electron Capture<= 30.00%
Electron Capture with
delayed Proton Emission
19.00%
Electron Capture with
delayed Double Proton Emission
7.80%
Electron Capture with
delayed Triple Proton Emission
3.30%
4613.0 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
78.70%
4721.9 millisecondsElectron Capture with
delayed Proton Emission
88.4%
Electron Capture with
delayed Double Proton Emission
No Data Available
Electron Capture100.00%
4845.3 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
15.90%
4964.7 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
56.70%
50155 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission (suspected)
No Data Available
51305 millisecondsElectron Capture100.00%
528.275 hoursElectron Capture100.00%
52m45.9 secondsIsomeric Transition< 4.0×10-3 %
Electron Capture100.00%
538.51 minutesElectron Capture100.00%
53m2.54 minutesIsomeric Transition100.00%
54STABLE--
552.744 yearsElectron Capture100.00%
56STABLE--
57STABLE--
58STABLE--
5944.495 daysBeta-minus Decay100.00%
602.62×10+6 yearsBeta-minus Decay100.00%
615.98 minutesBeta-minus Decay100.00%
6268 secondsBeta-minus Decay100.00%
636.1 secondsBeta-minus Decay100.00%
642.0 secondsBeta-minus Decay100.00%
650.81 secondsBeta-minus Decay100.00%
65m1.12 secondsBeta-minus Decay100.00%
66440 millisecondsBeta-minus Decay100.00%
670.40 secondsBeta-minus Decay100.00%
68180 millisecondsBeta-minus Decay100.00%
69110 millisecondsBeta-minus Decay100.00%
7071 millisecondsBeta-minus Decay100.00%
7128 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
72>= 150 nanosecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
27.60%
73> 633 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
Beta-minus Decay with delayed
Double Neutron Emission
No Data Available
74> 638 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
Beta-minus Decay with delayed
Double Neutron Emission
No Data Available