Which of the following statements about the complex ${[{CoF}_{6}]}^{3 -}$ which is paramagnetic in nature is correct?

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The cobalt involves $d^{2} {sp}^{3}$ hybridization

The cobalt involves ${sp}^{3} d^{2}$ hybridization

The primary valencies of cobalt are nine

The ligands present in the complex are neutral fluorine atoms

answer is B.

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Detailed Solution

Statement B about the complex ${[{CoF}_{6}]}^{3 -}$ which is paramagnetic in nature is correct. The cobalt involves ${sp}^{3} d^{2}$ hybridization

The 1s, 3p, and 2d orbitals in ${sp}^{3} d^{2}$ hybridization combine to generate six identical sp3d2 hybrid orbitals. These six orbitals are pointed in the direction of an octahedron's four corners. They are 90 degrees apart from one another and incline.

Hence, option B is correct.

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