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Match the complexes in LIST-I with their characteristics in LIST-II, and choose the correct option.
LIST-I LIST-II
I) $[N i {(C O)}_{4}]$ P)colored & paramagneticf
II) ${[P t C l_{4}]}^{2 -}$ Q)colorless & diamagnetic
III) ${[C o C l_{2} {(N H_{3})}_{4}]}^{+}$ R)exhibits only geometrical isomerism
IV) ${[C r C l_{2} {(o x)}_{2}]}^{3 -}$ S)exhibits geometrical as well as optical isomerism
T)uses at least one d-orbital in hybridization
[Given, atomic numbers: Cr – 24, Co – 27, Ni – 28, Pt – 78]

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$I \to Q; I I \to Q, T; I I I \to P, R, T; I V \to P, S, T$

$I \to P, I I \to P, T; I I I \to R, T; I V \to Q, S$

$I \to Q; I I \to P; I I I \to S; I V \to T$

$I \to P; I I \to P, T; I I I \to P, Q, R, T; I V \to Q, S, T$

answer is B.

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Detailed Solution

$[N i {(C O)}_{4}]$ - sp3 – diamagnetic – colorless
${[P t C l_{4}]}^{2 -}$ - dsp2 – diamagnetic – colorless
${[C o C l_{2} {(N H_{3})}_{4}]}^{+}$ – sp3d2 – diamagnetic – colored
${[C r C l_{2} {(o x)}_{2}]}^{3 -}$ – d2sp3 – paramagnetic – colored

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