Chapter F, Problem C.14E

(a)

Interpretation Introduction

Interpretation:

Formula of compound formed from $\text{Ca}$ and $\text{C}$ has to be written.

Concept Introduction:

Ionic compounds are electrically neutral.  This is because there are equal numbers of opposite charges present in the ionic compounds.  Empirical formula gives a relative number of atoms of each type of element that is present in the compound to the smallest possible whole-number as subscript.

(b)

Interpretation Introduction

Interpretation:

Formula of compound formed from $\text{Al}$ and $\text{O}$ has to be written.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Formula of compound formed from $\text{Li}$ and $\text{N}$ has to be written.

Concept Introduction:

Refer part (a).

(d)

Interpretation Introduction

Interpretation:

Formula of compound formed from $\text{Sr}$ and $\text{S}$ has to be written.

Concept Introduction:

Refer part (a).