Chapter 3, Problem 3.25P

(a)

Interpretation Introduction

Interpretation: The longer bond between the axial and equatorial bonds is to be stated.

Concept Introduction: The axial bonds are perpendicular to the molecular plane. The equatorial bonds lie in the plane of the molecule. These are present at $\text{120°}$ to each other. The axial bonds are also perpendicular to these equatorial bonds.

(b)

Interpretation Introduction

Interpretation: The molecules having a smaller angle between the axial bonds and a smaller angle between the equatorial bonds need to be stated.

Concept Introduction: The bond angle is majorly affected by the repulsions between the electron pairs. The repulsions are higher between the lone pairs and least between the bonded electron pairs.