Chapter 2, Problem 2D.6E

(a)

Interpretation Introduction

Interpretation:

Out of the compounds ${\text{PH}}_{\text{3}}$ and ${\text{NH}}_{\text{3}}$ the compound with greater ionic character has to be determined.

Concept Introduction:

In any polar covalent bond, the difference in electronegativities gives rise to partial positive and negative charges respectively on the cation and anions. Ionic character of a polar covalent bond is determined on the basis of difference in electronegativities. If the difference exceeds 2, the compound is regarded as predominantly ionic otherwise it is primarily covalent.

(b)

Interpretation Introduction

Interpretation:

Out of the compounds ${\text{SO}}_{\text{2}}$ and ${\text{NO}}_{\text{2}}$ the compound with greater ionic character has to be determined.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Out of the compounds ${\text{SF}}_{\text{6}}$ and ${\text{IF}}_5$ the compound with greater ionic character has to be determined.

Concept Introduction:

Refer to part (a).