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

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

A

`Mn^(2+)` is more stable with high 3rd ionisation energy

B

`Mn^(2+)` is bigger in size

C

`Mn^(2+)` has completely filled d-orbitals

D

`Mn^(2+)` does not exist

Text Solution

Verified by Experts

The correct Answer is:
A
`Mn^(2+)` has stable half-filled electronic configuration thus, it has high third ionisation energy while `Fe^(2+)` on losing one more electron will acquire this stable electronic configuration. Thus, `Fe^(2+)` is more prone to get oxidised to +3 oxidation state.
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