Chemistry - Coordination Chemistry Question with Solution | TestHub

Oxidation state of iron in$\left[\text{Fe}{\left(\text{CO}\right)}_{\text{2}}{\left({\text{NO}}^{\text{+}}\right)}_{\text{2}}\right]\text{=}\text{x}\text{+}\text{2}\left(\text{0}\right)\text{+}\text{2}\text{=}\text{0;}\text{x}\text{=}-\text{2}$
So, EAN$=26-\left(-2\right)+8=36=\mathrm{x}$

Oxidation state of cobalt in$\text{C}{\text{o}}_2{\left(\text{CO}\right)}_8=2\mathrm{x}+8\left(-0\right)=$or$\mathrm{x}=0$
So, EAN$=27+1+8=36=\mathrm{y}$
So,$\mathrm{x}+\mathrm{y}=72$