Chapter 24, Problem 64FP

Interpretation Introduction

(a)

Interpretation:

Whether the structure given by Werner predicts the correct number of isomers of the complex ion ${{\text{[CoCl}}_{\text{2}}{{\text{(NH}}_{\text{3}}\text{)}}_{\text{4}}\text{]}}^{\text{+}}$ or not needs to be determined.

Concept introduction:

Werner’s postulates are explained as follows:

1. The central metal atom of complex exhibits primary and secondary valency.
2. The primary valency indicates the oxidation state of the metal and secondary valency exhibits the coordinate number.
3. All metals have a fixed coordinate number.
4. The secondary valency indicates the geometry of the compound.

Interpretation Introduction

(b)

Interpretation:

Whether the structure given by Werner accounts for the optical isomer of ${{\text{[Co(en)}}_{\text{3}}\text{]}}^{\text{3+}}$ or not needs to be explained.

Concept introduction:

Werner’s postulates are explained as follows:

1. The central metal atom of complex exhibits primary and secondary valency.
2. The primary valency indicates the oxidation state of the metal and secondary valency exhibits the coordinate number
3. All metals have a fixed coordinate number.
4. The secondary valency indicates the geometry of the compound.