Chapter 10, Problem 10A.5BE

(i)

Interpretation Introduction

Interpretation:

The point group of $\text{HF}$ has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.

(ii)

Interpretation Introduction

Interpretation:

The point group of ${\text{IF}}_7$ has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.

(iii)

Interpretation Introduction

Interpretation:

The point group of ${\text{ClF}}_3$ has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.

(iv)

Interpretation Introduction

Interpretation:

The point group of ${\text{Fe}}_{\text{2}}{\left(\text{CO}\right)}_{\text{9}}$ has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.

(v)

Interpretation Introduction

Interpretation:

The point group of cubane $\left({\text{C}}_8{\text{H}}_{\text{8}}\right)$ has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.

(vi)

Interpretation Introduction

Interpretation:

The point group of tetrafluorocubane $\left({\text{C}}_{\text{8}}{\text{H}}_{\text{4}}{\text{F}}_{\text{4}}\right)$ has to be stated.

Concept introduction:

A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement.  The spatial arrangement of the object remains identical after a symmetry operation.  The point of reference through which a symmetry operation takes place is termed as a symmetry element.