Chapter 20, Problem 16Q

Interpretation Introduction

Interpretation: The explanation of the fact that, compounds of copper (I) are generally colored, but compounds of copper (II) are not is to be stated. It is to be stated, if $\text{Cd}{\left({\text{NH}}_{\text{3}}\right)}_{\text{4}}{\text{Cl}}_{\text{2}}$ is a colored complex compound. The explanation is to be given for the answer.

Concept introduction: The complex ion that contains unpaired electrons is said to be colored.

The complex ions or compounds are said to be stable if the energy levels of these compounds or ions are completely filled or half filled.

To explain: The fact that, compounds of copper (I) are generally colored, but compounds of copper (II) are not; if $\text{Cd}{\left({\text{NH}}_{\text{3}}\right)}_{\text{4}}{\text{Cl}}_{\text{2}}$ is a colored complex compound.