Chapter 21, Problem 21.119SP

Interpretation Introduction

Interpretation:

The reason for the complex ${[{\text{CoCl}}_{\text{4}}]}^{2-}$ to be blue and the complex ${[\text{Co}{\left({\text{H}}_{\text{2}}\text{O}\right)}_{\text{6}}]}^{2+}$ to be pink in color needs to be explained. The complex with longer wavelengths of absorption bands needs to be determined.

Concept introduction:

The energy level diagram is used for the representation of energy shell, sub-shell and orbital that is occupied by the electrons of the atoms.