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Match the column
Column-I Column II
A) ${[Ni {(CN)}_{4}]}^{2 -}$ p) $d^{2} {sp}^{3}$
B) $[Ni {(CO)}_{4}]$ q) ${sp}^{3} d^{2}$
C) ${[Co {(en)}_{3}]}^{3 +}$ r) ${dsp}^{2}$
D) ${[Co {(Br)}_{3} {Cl}_{3}]}^{3 -}$ s) ${sp}^{3}$

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A(r), B(s), C(p), D(q)

A(s), B(r), C(p), D(q)

A(r), B(p), C(s), D(r)

A(r), B(q), C(r), D(p)

answer is A.

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Detailed Solution

$A (r), B (s), C (p), D (q)$ .

$\begin{array}{l} {[Ni (CN)_{4}]}^{2 -} \to {dsp}^{2} \\ {[Ni (CO)_{4}]}^{2 -} \to {sp}^{3} \\ {[Co (en)_{3}]}^{+ 3} \to d^{2} {sp}^{3} \\ {[{CoBr}_{3} {Cl}_{2}]}^{- 3} \to {sp}^{3} d^{2} \end{array}$

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