Assertion : Low spin complexes have lesser nu | vedclass

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(C) Low spin complexes are formed when strong field ligands cause pairing of electrons,resulting in a smaller number of unpaired electrons.In $[FeF_6]

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If the Assertion is correct but Reason is incorrect.

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(C) Low spin complexes are formed when strong field ligands cause pairing of electrons,resulting in a smaller number of unpaired electrons.In $[FeF_6]^{3-}$,the oxidation state of $Fe$ is $+3$ ($3d^5$ configuration).$F^{-}$ is a weak field ligand,which does not cause pairing of electrons.Therefore,$[FeF_6]^{3-}$ is a high spin complex with $5$ unpaired electrons.Thus,the Assertion is correct,but the Reason is incorrect.

Assertion : Low spin complexes have lesser number of unpaired electrons.
Reason : $[FeF_6]^{3-}$ is a low spin complex.

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Assertion : Low spin complexes have lesser number of unpaired electrons.Reason : $[FeF_6]^{3-}$ is a low spin complex.