Chemistry - Carbonyl compounds Question with Solution | TestHub

EAN = Z – Oxidation number +$2\times$number of ligands
$\left[\mathrm{C}\mathrm{a}\right(\mathrm{E}\mathrm{D}\mathrm{T}\mathrm{A}){]}^{2-}$$20-2+(6\times 2)=30$
$\left[\mathrm{C}\mathrm{r}\right(\mathrm{e}\mathrm{n}{)}_3{]}^{3+}$$24-3+(2\times 2\times 3)=33$
$\left[\mathrm{C}\mathrm{o}\mathrm{B}\mathrm{r}\mathrm{C}\mathrm{l}\right(\mathrm{t}\mathrm{r}\mathrm{i}\mathrm{e}\mathrm{n}){]}^{+}$$27-3+2+2+(4\times 2)=36$
$\left[\mathrm{N}\mathrm{i}\right(\mathrm{d}\mathrm{m}\mathrm{g}{)}_2]$$28-2+(4\times 2)=34$