Chapter 2, Problem 2.80QE

(a)

Interpretation Introduction

Interpretation:

Empirical formula of the compound formed from ${\text{Li}}^{\text{+}}$ and ${\text{I}}^{-}$ has to be given.

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:

Empirical formula of the compound formed from ${\text{Cs}}^{\text{2+}}$ and ${\text{O}}^{2-}$ has to be given.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Empirical formula of the compound formed from ${\text{Y}}^{\text{3+}}$ and ${\text{Cl}}^{-}$ has to be given.

Concept Introduction:

Refer part (a).