Effective Atomic Number (EAN) of Co in Co_2(C | vedclass

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Question

(D) The $EAN$ is calculated using the formula: $EAN = Z - O.S. + 2 	imes C.N.$,where $Z$ is the atomic number,$O.S.$ is the oxidation state,and $C.N.

Vedclass · Accepted Answer

$37$

Vedclass · Answer

(D) The $EAN$ is calculated using the formula: $EAN = Z - O.S. + 2 	imes C.N.$,where $Z$ is the atomic number,$O.S.$ is the oxidation state,and $C.N.$ is the coordination number.In $Co_2(CO)_8$,the complex contains a $Co-Co$ bond.Each $Co$ atom is bonded to $3$ terminal $CO$ groups,$1$ bridging $CO$ group,and $1$ $Co$ atom.Thus,the coordination number $(C.N.)$ of each $Co$ is $3 + 1 + 1 = 5$.The oxidation state $(O.S.)$ of $Co$ in $Co_2(CO)_8$ is $0$.The atomic number $(Z)$ of $Co$ is $27$.$EAN = 27 - 0 + 2 	imes 5 = 27 + 10 = 37$.

Effective Atomic Number $(EAN)$ of $Co$ in $Co_2(CO)_8$ will be

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