Chapter 22, Problem 22.62QP

Interpretation Introduction

Interpretation:

Color of ${\left[Co{\left(en\right)}_3\right]}^{3+}$ ion which has maximum absorption at $470\text{ nm}$ has to be determined.

Concept Introduction:

Almost all the Co-ordination compounds are colored compounds.  Presence of unpaired electrons in a complex compound makes it colored as the unpaired electrons undergo transition from lower energy level to higher energy level.  The color of the complex observed is complementary to the color absorbed in the wavelength region.