In which of the following complex ions is the | vedclass

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(B) The magnetic moment $\mu = \sqrt{n(n+2)} \ B.M.$ where $n$ is the number of unpaired electrons.For $\mu = \sqrt{3} \ B.M.$,$n = 1$.$1$. $[Fe(NH_3)

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$[CuCl_5]^{2-}$

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(B) The magnetic moment $\mu = \sqrt{n(n+2)} \ B.M.$ where $n$ is the number of unpaired electrons.For $\mu = \sqrt{3} \ B.M.$,$n = 1$.$1$. $[Fe(NH_3)_6]^{3+}$: $Fe^{3+}$ is $3d^5$. $NH_3$ is a strong field ligand,causing pairing. $n=1$. Hybridization is $d^2sp^3$ (inner orbital).$2$. $[CuCl_5]^{2-}$: $Cu^{2+}$ is $3d^9$. $Cl^-$ is a weak field ligand. $n=1$. Hybridization is $sp^3d$ (outer orbital).$3$. $[Mn(CN)_6]^{4-}$: $Mn^{2+}$ is $3d^5$. $CN^-$ is a strong field ligand. $n=1$. Hybridization is $d^2sp^3$ (inner orbital).$4$. $[Co(NH_3)_6]^{2+}$: $Co^{2+}$ is $3d^7$. $NH_3$ is a strong field ligand. $n=1$. Hybridization is $d^2sp^3$ (inner orbital).Thus,$[CuCl_5]^{2-}$ uses outer $d-$orbitals $(sp^3d)$ and has a magnetic moment of $\sqrt{3} \ B.M.$

In which of the following complex ions is the value of the magnetic moment (spin only) $\sqrt{3} \ B.M.$ and outer $d-$orbitals are used in hybridization?

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