Why Fe 2- radialy oxidises to Fe 3- - -

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Byju's Answer

Standard XII

Chemistry

Electronic Configuration

Why Fe 2+ rad...

Question

Why Fe²⁺radialy oxidises to Fe³⁺??

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Solution

The total number of electron in neutral Fe is 26.
The electronic configuration of Fe , Fe2+ and Fe3+ are

Fe: [Ar] 3d6 4s2

Fe2+ : [Ar] 3d6

Fe3+ : [Ar] 3d5

The electronic configuration of Fe3+ is more stable because its 3d orbital is a half-filled orbital. It has extra stability compared to the Fe2+ . Hence, Fe2+ will lose one electron easily to form Fe3+.

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