The number of species from the following that are involved in hybridization is [2025]

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Solution

Q.
The number of species from the following that are involved in $s p^{3} d^{2}$ hybridization is [2025]

${[Co {({NH}_{3})}_{6}]}^{3 +}, {SF}_{6}, {[{CrF}_{6}]}^{3 -}, {[{CoF}_{6}]}^{3 -}, {[Mn {(CN)}_{6}]}^{3 -} {and [MnCl}_{6}]^{3 -}$

1 5

2 6

3 4

4 3

Ans.
(4)

S in ${SF}_{6}$ is $s p^{3} d^{2}$ .

Complex Electronic configuration of central metal ion Electronic configuration of central ion after octahedral splitting Hybridization

${[Co {({NH}_{3})}_{6}]}^{3 +}$ ${Co}^{3 +} = {}_{18}{[Ar]}$ $3 d^{6}$ $t_{2 g}^{2, 2, 2} e_{g}^{0, 0}$ $d^{2} s p^{3}$

${[{CrF}_{6}]}^{3 -}$ ${Cr}^{3 +} = {}_{18}{[Ar]}$ $3 d^{3}$ $t_{2 g}^{1, 1, 1} e_{g}^{0, 0}$ $d^{2} s p^{3}$

${[{CoF}_{6}]}^{3 -}$ ${Co}^{3 +} = {}_{18}{[Ar]}$ $3 d^{6}$ $t_{2 g}^{2, 1, 1} e_{g}^{1, 1}$ $s p^{3} d^{2}$

${[Mn {(CN)}_{6}]}^{3 -}$ ${Mn}^{3 +} = {}_{18}{[Ar]}$ $3 d^{4}$ $t_{2 g}^{2, 1, 1} e_{g}^{0, 0}$ $d^{2} s p^{3}$

${[{MnCl}_{6}]}^{3 -}$ ${Mn}^{3 +} = {}_{18}{[Ar]}$ $3 d^{4}$ $t_{2 g}^{1, 1, 1} e_{g}^{1, 0}$ $s p^{3} d^{2}$

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