Question

The type of isomerism shown by the complex [CoCl₂(en)₂] is ______.

Options

• ionization isomerism

• coordination isomerism

• geometrical isomerism

• linkage isomerism

Answer 1

The type of isomerism shown by the complex [CoCl₂(en)₂] is geometrical isomerism.

Explanation:

In [CoCl₂(en)₂], Co³⁺ is octahedral with two bidentate en ligands and two Cl⁻ ligands.
The two Cl⁻ can be placed adjacent (cis) or opposite (trans), giving geometrical isomerism.