Chapter 10, Problem 10B.3BE

Interpretation Introduction

Interpretation:

All three ${\sigma }_{\text{V}}$ operations in the group $D_{\text{3h}}$ belong to the same class has to be shown.

Concept introduction:

A class in the character table of a point group contains symmetry operations of the same type.  This same type of symmetry operations are transformed into one another when a symmetry operation of the group is applied on them.