Question

Here how many ligands are ambidentate?
$C{N}^{-},ON{O}^{-},S_2{O}_3^{2-},CN{O}^{-},C_2{O}_4^{2-},C{H}_{3}CO{O}^{-},en$

Answer 1

Answer: 4

Here ${\text{CN}}^{-}\text{,}{\text{ONO}}^{-}\text{,}{\text{S}}_{\text{2}}{\text{O}}_{\text{3}}^{\text{2}-}\text{,}{\text{CNO}}^{-}$ are ambidentate ligands.
$M\leftarrow AB$ and $M\leftarrow BA$