Fe3+ ion is more stable than Fe2+ ion because

Fe 2+ has a larger size than Fe 3+

Fe 2+ has a larger size than Fe 3+

configuration of Fe 2+ is 3d 6 while Fe 3+ is 3d 5

Fe 2+ has a larger size than Fe 3+

Fe 3+ ions are colored hence more stable

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Fe³⁺ ion is more stable than Fe²⁺ ion because

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configuration of Fe²⁺ is 3d⁶while Fe³⁺ is 3d⁵

Fe²⁺ has a larger size than Fe³⁺

more the charge on the atom, more is its stability

Fe³⁺ ions are colored hence more stable

answer is B.

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configuration of Fe²⁺ is 3d⁶ while Fe³⁺ is 3d⁵

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