The magnetic moment is measured in Bohr Magne | vedclass

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(D) For $[Fe(H_2O)_6]^{3+}$:$Fe^{3+}$ has $d^5$ configuration. $H_2O$ is a weak field ligand,so no pairing occurs.Number of unpaired electrons $(n)$ =

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$5.92 \ BM$ and $1.732 \ BM$

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(D) For $[Fe(H_2O)_6]^{3+}$:$Fe^{3+}$ has $d^5$ configuration. $H_2O$ is a weak field ligand,so no pairing occurs.Number of unpaired electrons $(n)$ = $5$.$\mu = \sqrt{n(n+2)} = \sqrt{5(5+2)} = \sqrt{35} \approx 5.92 \ BM$.For $[Fe(CN)_6]^{3-}$:$Fe^{3+}$ has $d^5$ configuration. $CN^-$ is a strong field ligand,so pairing occurs.Number of unpaired electrons $(n)$ = $1$.$\mu = \sqrt{1(1+2)} = \sqrt{3} \approx 1.732 \ BM$.Thus,the magnetic moments are $5.92 \ BM$ and $1.732 \ BM$ respectively.

The magnetic moment is measured in Bohr Magneton $(BM)$. Spin only magnetic moment of $Fe$ in $[Fe(H_2O)_6]^{3+}$ and $[Fe(CN)_6]^{3-}$ complexes respectively is:

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