What is the magnetic moment of [FeF_6]^{3-} ( | vedclass

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(A) In $[FeF_6]^{3-}$,the oxidation state of $Fe$ is $+3$.The electronic configuration of $Fe^{3+}$ is $[Ar] \ 3d^5$.Since $F^-$ is a weak field ligan

Vedclass · Accepted Answer

$5.92$

Vedclass · Answer

(A) In $[FeF_6]^{3-}$,the oxidation state of $Fe$ is $+3$.The electronic configuration of $Fe^{3+}$ is $[Ar] \ 3d^5$.Since $F^-$ is a weak field ligand,it does not cause pairing of electrons.Thus,there are $5$ unpaired electrons $(n = 5)$.The magnetic moment is calculated using the formula $\mu = \sqrt{n(n+2)} \ BM$.$\mu = \sqrt{5(5+2)} = \sqrt{35} \approx 5.92 \ BM$.

What is the magnetic moment of $[FeF_6]^{3-}$ (in $BM$)?

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