Question

The EAN of metal atoms in $Fe{\left(CO\right)}_2{\left(NO\right)}_2$ and $C{o}_2{\left(CO\right)}_8$ respectively are :

• A. 34, 35
• B. 34, 36
• C. 36, 36
• D. 36, 35

Answer 1

The correct option is C 36, 36

In $Fe{\left(CO\right)}_2{\left(NO\right)}_2$, Fe has 26 electron and it get 8 electron due to ligands and 2 electron due to negative valency so its EAN is $26+2+8=36$.
In $C{o}_2{\left(CO\right)}_8$, Co has 27 electron and one electron due to covalent bond and 8 electron due to ligands so EAN $=27+1+8=36$.