Chapter 17, Problem 17.69QP

(a)

Interpretation Introduction

To determine: The number of d electrons in ${\text{Co}}^{2+},{\text{Cr}}^{2+},{\text{Ni}}^{2+}$ and ${\text{Cu}}^{2+}$.

Interpretation: The number of d electrons in each of the given ions is to be predicted.

Concept Introduction: The number of d electrons present in the given cation is determined by its electronic configuration.

(b)

Interpretation Introduction

To determine: The cations which have high spin or low spin states in octahedral fields.

Interpretation: The cations which have high spin or low spin states out of the ${\text{Co}}^{2+},{\text{Cr}}^{2+},{\text{Ni}}^{2+}$ and ${\text{Cu}}^{2+}$ is to be predicted.

Concept Introduction: The cations which have more than one unpaired electrons can have both high spin and low spin states depending upon the type of ligand.