Standard Books Chemistry Stability of Complexes MCQ Question with Solution

Fe³⁺ compounds are more stable than Fe²⁺ compounds because

A

Fe³⁺ has smaller size than Fe²⁺

B

Fe³⁺ has 3d⁵ configuration (half-filled)

C

Fe³⁺ has higher oxidation state

D

Fe³⁺ is paramagnetic in nature.

Option B

3d⁵ configuration is more stable due to singly occupied half-filled orbitals.

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STANDARD Chemistry Stability of Complexes MCQ Question