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Why are Mn^(2+) compounds more stable th...

Why are `Mn^(2+)` compounds more stable than `Fe^(2+)` toward oxidation to their `+3` state?

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Electronic configuration of `Mn^(2+)` is [Ar] `3d^5` which is half filled and hence it is stable. Therefore, third ionisation enthalpy is very high i.e., third electron cannot be easily removed. In case of `Fe^(2+)` , the electronic configuration is `3d^6`. Therefore, `Fe^(2+)` can easily lose one electron to acquire `3d^5` stable electronic configuration.
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Why Mn^(2+) compounds are more stable than Fe^(2+) compounds towards oxidation to their + 3 state ?