Which of the following species does not involve inner orbital hybridization?

[C o F_{6}]^{3 -}

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[C o (N H_{3})_{6}]^{2 +}

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[F e (C N)_{6}]^{3 -}

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[C r (N H_{3})_{6}]^{3 +}

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Solution

The correct option is A $[C o F_{6}]^{3 -}$
$[C o F_{6}]^{3 -}$ does not have inner orbital hybridization since it s a weak field ligand. $C N^{-}, N H_{3}$ will show inner orbital hybridization as they are strong field ligands.

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Similar questions

Q. Which of the following is not correctly matched?

	Complex ion	CFSE
a	$[C o (N H_{3})_{6}]^{3 +}$	$24 D q$
b	$[C r (N H_{3})_{6}]^{3 +}$	$12 D q$
c	$[F e F_{6}]^{3 -}$	$4 D q$
d	$[F e (C N)_{6}]^{3 -}$	$20 D q$

Atomic number of Mn. Fe and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamangetic?
(a) $[C o (N H_{3})_{6}]^{3 +}$
(b) $[M n (C N)_{6}]^{3 -}$
(c) $[F e (C N)_{6}]^{4 -}$
(d) $[F e (C N)_{6}]^{3 -}$