NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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Spin only magnetic moment of which complex is highest?

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Correct option: C

\left[\mathrm{FeF}_{{6}}\right]^{3-}

Option C (

\left[\mathrm{FeF}_{{6}}\right]^{3-}

) is correct because

Fe^{3+}

has a

d^5

configuration and

F^-

is a weak field ligand, leading to a high-spin complex with 5 unpaired electrons, resulting in the highest spin-only magnetic moment.

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