Chapter 2, Problem 2.31E

(a)

Interpretation Introduction

Interpretation:

Bonding and antibonding orbitals that correspond to $\sigma$ bond formation in ${\text{H}}_{\text{2}}$ has to be drawn.

Concept Introduction:

Linear combination of atomic orbital occurs to form molecular orbitals. The characteristics of new molecular orbital depend upon by the kind and number of orbitals used in the hybridization. The new molecular orbitals are always equal in number to number of atomic orbitals that combine.

Bonding orbitals are formed when the wave function of the two atomic orbitals meet by constructive interference while antibonding orbitals are formed as a result of destructive interference.

(b)

Interpretation Introduction

Interpretation:

Bonding and antibonding orbitals that correspond to $\sigma$ bond formation in $\text{HF}$ has to be drawn.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The manner $\sigma$ bonding and antibonding orbitals differ for ${\text{H}}_{\text{2}}$ and $\text{HF}$ have to be described.

Concept Introduction:

Refer to part (a).