Chemistry - Coordination Chemistry Question with Solution | TestHub

P. $\left[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]$ is an octahedral ${\mathrm{MA}}_4{\mathrm{B}}_2$ type complex and shows cis-trans geometrical isomerism ( 2 GI).

Q. ${\left[\mathrm{Co}(\mathrm{en}{)}_2{\mathrm{Cl}}_2\right]}^{+}$is an octahedral complex with two bidentate en ligands and shows cis-trans geometrical isomerism; the cis form is optically active and since en is a strong field ligand it forms an inner orbital ( ${\mathrm{d}}^2{\mathrm{sp}}^3$ ) complex.

R. ${\left[\mathrm{Cr}(\mathrm{ox}{)}_3\right]}^{3-}$ contains three bidentate ox ligands, forms an octahedral chiral complex, shows optical isomerism, and is inner orbital ( ${\mathrm{d}}^2{\mathrm{sp}}^3$ ).

S. ${\left[\mathrm{Pt}\left({\mathrm{NH}}_3\right)(\mathrm{Br})(\mathrm{Cl})(\mathrm{I})\right]}^{-}$is a square planar ${\mathrm{d}}^8$ complex of $\mathrm{Pt}(\mathrm{II})$ with four different ligands and therefore shows three geometrical isomers.