Chemistry - Coordination Chemistry Question with Solution | TestHub

The complex $\mathrm{K}\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_2{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_2\right]$ has the general formula ${\mathrm{MA}}_2{\mathrm{B}}_2$ (where $\mathrm{A}={\mathrm{H}}_2\mathrm{O}$ and ${\mathrm{B}}_2={\mathrm{C}}_2{\mathrm{O}}_4^{2-}$ is a bidentate ligand). This type of complex can exhibit cis and trans geometrical isomers. The oxalate ligand (${\mathrm{C}}_2{\mathrm{O}}_4^{2-}$) is bidentate and occupies two coordination sites. The two water ligands can be arranged cis or trans to each other.