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  4. The EAN of Fe in K4[F e (C N)6] is

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Q. The EAN of $Fe$ in $K_{4}\left[F e \left(C N\right)_{6}\right]$ is

NTA AbhyasNTA Abhyas 2022

Solution:

EAN is known as effective atomic number. It is given by the relation.
$EAN=Atomic \, number-Oxidation \, state+2\times number \, of \, Ligands$
$=26-2+2\left(\right.6\left.\right)=36.$