Which of the following complexes is an outer orbital complex?

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${[Ni {({NH}_{3})}_{6}]}^{2 +}$

${[Co {({NH}_{3})}_{6}]}^{3 +}$

${[Fe (CN)_{6}]}^{4}$

${[Mn ({CN}_{6})]}^{4}$

answer is B.

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Detailed Solution

Outer orbital complexes are coordination compounds composed of a central metal atom having hybridization of the atomic orbitals including s, p and d orbitals from the outermost shell.

We have

Thus, [Ni(NH₃)₆]²⁺ involves outer orbital complexation.

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