Chapter 17, Problem 17.87AP

Interpretation Introduction

Interpretation: The dissolution of cobalt (II) nitrate complex in water is given to give rise to beautiful purple solution that has three unpaired electrons. The dissolution of cobalt (II) nitrate complex in aqueous ammonia and oxidized process with air give rise to yellow complex that has no unpaired electrons.

The cobalt complex that has high crystal field splitting energy $\left({\Delta }_{\text{ο}}\right)$ from the given set of cobalt complexes is to be predicted.

Concept introduction: The no unpaired electrons complexes has high crystal field splitting energy $\left({\Delta }_{\text{ο}}\right)$ as compared to spin pairing energy.

To determine: The cobalt complex that has high crystal field splitting energy $\left({\Delta }_{\text{ο}}\right)$ from the given set of cobalt complexes.