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Column –I Column-II
A $C u^{+ 2}$ P Form amphoteric oxide
B $Z n^{+ 2}$ Q Form diamagnetic tetrahedral complex with $N H_{3}$
C $C r^{+ 3}$ R Paramagnetic
D $N i^{+ 2}$ S Forms square planar complex with $N H_{3}$

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$A \to R S; B \to P Q; C \to P R; D \to R$

$A \to Q R S; B \to P Q; C \to P R S; D \to Q S$

$A \to R S; B \to P S; C \to P R; D \to R S$

$A \to R S; B \to P Q S; C \to P R S; D \to Q R S$

answer is B.

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Detailed Solution

$C u^{+ 2} \to d^{9}$ So paramagnetic and ${[C u {(N H_{3})}_{4}]}^{+ 2}$ is sq. planar $N i^{+ 2} \to f o r m s$ ${[N i {(N H_{3})}_{6}]}^{+ 2}$

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