Which one of the following complexes can exhibit geometrical isomerism? Which one of the following complexes can exhibit geometrical isomerism? [Cu(NH3)4]2+ (square planar) [Zn(NH3)2Cl2] (tetrahedral) [Cu(NH3)5Cl]2+ (octahedral) [Pt(NH3)2Cl2] (square planar) All of the above can exhibit geometrical isomerism.