Chapter 11, Problem 11B.3BE

(a)

Interpretation Introduction

Interpretation:

The rotor, ${\text{CH}}_{\text{2}}{\text{=CH}}_{\text{2}}$ has to be classified.

Concept introduction:

A three-dimensional rotating molecule is termed as a rotor. If the bond length of the molecule does not change during the rotation, the molecule is termed as a rigid rotor. Rigid rotors can be classified into four classes depending upon the three principal moments of inertia about three mutually perpendicular axis.

(b)

Interpretation Introduction

Interpretation:

The rotor, ${\text{SO}}_{\text{3}}$ has to be classified.

Concept introduction:

As mentioned in the concept introduction in part (a).

(c)

Interpretation Introduction

Interpretation:.

The rotor, ${\text{ClF}}_{\text{3}}$ has to be classified.

Concept introduction:

As mentioned in concept introduction in part (a).

(d)

Interpretation Introduction

Interpretation:.

The rotor, ${\text{N}}_{\text{2}}\text{O}$ has to be classified.

Concept introduction:

As mentioned in concept introduction in part (a).