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| Isotopes of Manganese |
 Notes
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| Naturally occurring manganese is composed of just 1 stable isotope; 55Mn. |
 Notable Isotopes
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 52Mn [27 neutrons] |
 Abundance: Synthetic
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| Half life: 5.591 days [ Electron Capture ]
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| Decay Energy: ?MeV |
| Decays to 52Cr.
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| Half life: 5.591 days [ beta+ ]
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| Decay Energy: 0.575MeV |
| Decays to 52Cr.
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| Half life: 5.591 days [ Gamma Radiation ]
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| Decay Energy: 0.7, 0.9, 1.4MeV |
| Decays to ?.
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| 53Mn [28 neutrons] |
| Abundance: Synthetic
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| Half life: 3.74 x 106 years [ Electron Capture ]
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| Decay Energy: ?MeV |
| Decays to 53Cr.
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| 54Mn [29 neutrons] |
| Abundance: Synthetic
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| Half life: 312.3 days [ Electron Capture ]
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| Decay Energy: ?MeV |
| Decays to 54Cr.
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| Half life: 312.3 days [ Gamma Radiation ]
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| Decay Energy: 0.834MeV |
| Decays to ?.
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| 55Mn [30 neutrons] |
| Abundance: 100%
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| Stable with 30 neutrons
|