SATHEE: Co-Ordination Compounds Question 74

Co-Ordination Compounds Question 74

Question: Which one of the following complexes is an outer orbital complex

[AIEEE 2004]

Options:

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

B) ${[M n {(C N)}_{6}]}^{4 -}$

C) ${[F e {(C N)}_{6}]}^{4 -}$

D) ${[N i {(N H_{3})}_{6}]}^{2 +}$ Atomic nos: $M n = 25,, F e = 26,, C o = 27,, N i = 28$

Show Answer

Answer:

Correct Answer: D

Solution:

Complex ion	Hybridization of central atom
${[F e {(C N)}_{6}]}^{4 -}$	$d^{2} s p^{3}$ (inner)
${[M n {(C N)}_{6}]}^{4 -}$	$d^{2} s p^{3}$ (inner)
${[C o {(N H_{3})}_{6}]}^{3 +}$	$d^{2} s p^{3}$ (inner)
${[N i {(N H_{3})}_{6}]}^{2 +}$	$s p^{3} d^{2}$ (outer)

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