Question

Which of the following types of square planar complexes can show geometrical isomerism [M = metal, a, b, = monodentate ligand]?

Options

• Ma₄

• Ma₃b

• Mab₃

• Ma₂b₂

Answer 1

Ma₂b₂ 

Explanation:

Complexes with coordination number 4 exhibit geometrical isomerism. The ligands in this form of isomerism occupy locations that are either near or opposite to one another. Among the specified square planar complexes, this is only conceivable in Ma₂b₂ type complexes.