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Q.

What is the correct electronic configuration of the central atom in K4Fe(CN)6 based on crystal field theory?

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a

eg4 t2g2

b

t2g4eg2

c

t2g6eg0

d

eg3 t2g3

answer is C.

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Detailed Solution

In K4Fe(CN)6 complex, Fe is in +2 oxidation state.  As CN-is a strong field ligand, it causes pairing of electrons   therefore, electronic configuration of Fe2+ in K4Fe(CN)6 is t2 g6eg0
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What is the correct electronic configuration of the central atom in K4Fe(CN)6 based on crystal field theory?