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(A) The $EAN$ (Effective Atomic Number) is calculated using the formula: $EAN = Z - ON + 2 	imes CN$,where $Z$ is the atomic number,$ON$ is the oxida

Vedclass · Accepted Answer

$36$

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(A) The $EAN$ (Effective Atomic Number) is calculated using the formula: $EAN = Z - ON + 2 	imes CN$,where $Z$ is the atomic number,$ON$ is the oxidation number,and $CN$ is the coordination number.For $[Ni(CO)_4]$:$Z$ of $Ni = 28$.$ON$ of $Ni = 0$ (since $CO$ is a neutral ligand).$CN = 4$ (there are $4$ $CO$ ligands).$EAN = 28 - 0 + 2 	imes 4 = 28 + 8 = 36$.

The $EAN$ of $Ni$ in $[Ni(CO)_4]$ is ....

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