Chapter 3, Problem 8QP

(a)

Interpretation Introduction

Interpretation:

${\text{Al}}_2{\text{S}}_3$ is an ionic or molecular compound.

(b)

Interpretation Introduction

Interpretation:

${\text{P}}_2{\text{O}}_5$ is an ionic or molecular compound.

(c)

Interpretation Introduction

Interpretation:

${\text{MgBr}}_2$ is an ionic or molecular compound.

(d)

Interpretation Introduction

Interpretation:

${\text{K}}_2\text{O}$ is an ionic or molecular compound.