Coordination Compounds Ques 33
33. What is the correct electronic configuration of the central atom in $K_4[Fe(CN)_6]$ based on crystal field theory?
[2019]
(a) $t _{2 g}^{4} e_g^{2}$
(b) $t _{2 g}^{6} e_g^{0}$
(c) $e_g^{3} t _{2 g}^{3}$
(d) $e_g^{4} t _{2 g}^{2}$
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Answer:
Correct Answer: 33.(b)
Solution:
(b)
$ K_4 [Fe(CN)_6]^{4-} \longrightarrow 4K^+ + [Fe(CN)_6]^{4-}$
$ x-6=-4 $
$ x= +2 $
$ Fe : 4s^2 3d^6 $
$ Fe^{2+} : 3d^6 $
BETA
