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Match the electronic configurations in List-I with appropriate metal complex ions in List-II and choose the correct option.
List-I List-II
P) $t_{2 g}^{6} e_{g}^{o}$ 1 ${[F e {(H_{2} O)}_{6}]}^{2 +}$
Q) $t_{2 g}^{3} e_{g}^{2}$ 2 ${[M n {(H_{2} O)}_{6}]}^{2 +}$
R) $e^{2} t_{2}^{3}$ 3 ${[C o {(N H_{3})}_{6}]}^{3 +}$
S) $t_{2 g}^{4} e_{g}^{2}$ 4 ${[F e C l_{4}]}^{-}$
5 ${[C o C l_{4}]}^{2 -}$

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$P - 1, Q - 4, R - 2, S - 3$

$P - 1, Q - 2, R - 4, S - 5$

$P - 3, Q - 2, R - 5, S - 1$

$P - 3, Q - 2, R - 4, S - 1$

answer is D.

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Detailed Solution

$P \to t_{2 g}^{6} e g^{0}$

${[C o {(N H_{5})}_{6}]}^{+ 3}$

$N H_{3} \to$ Strong ligand, pairing takes place

P – 3

$Q \to t_{2 g}^{3} e_{g}^{2}$

${[M n {(H_{2} O)}_{6}]}^{+ 2}, H_{2} O$ is week Ligand

$M n^{+ 2} 3 d^{5} 4 s^{0}$

$Q \to 2$

$R \to e_{g}^{2} . t_{2 g}^{3}$

${[F e C I_{4}]}^{-}$

$F e^{+ 3} = 3 d^{5}$

$R \to 4$

$S \to t_{g}^{4} . e_{g}^{2}$

${[F e {(H_{2} O)}_{6}]}^{+ 2}$

$F e^{+ 2} = 3 d^{6}$

$S \to 1$

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