Chapter 23, Problem 23.74P

Interpretation Introduction

Interpretation:

The theory of colour absorption of the solution has to be given.

Concept introduction:

The fact that colour depends on the ligand allows us to create a spectrochemical series, which ranks the ability of a ligand to split $\text{d-orbital}$ energies.

The relative magnitude of $\Delta$ for a series of octahedral complexes of a given metal ion.  As $\Delta$ increases, higher energies (shorter wavelengths) of light must be absorbed to excite electrons.

Relationships on an artist’s colour wheel in which complementary colours are wedges opposite each other.

Figure 1