Chemistry - STRUCTURAL ISOMERISM Question with Solution | TestHub

As in$\mathrm{M}{\mathrm{A}}_2{\mathrm{B}}_2$tetrahedral structure which is$\mathrm{s}{\mathrm{p}}^3$hybridised, the central metal is not chiral hence it does not show optical isomers.
In the case of square planar that is$\mathrm{d}\mathrm{s}{\mathrm{p}}^2$hybridised, two geometrical isomers will form but not optical isomers.