Chapter 2.4, Problem 2.7PSP

(a)

Interpretation Introduction

Interpretation:

The ions and the number of each are present in ${\text{CaSO}}_{\text{3}}$ has to be determined.

Concept Introduction:

An atom or a molecule having a net electrical charge is known as atom.  Charge of the electron is negative and charge of the proton is positive.  Both electron and proton have the same magnitude.  Positively charged ion is called cation and negatively charged ion is called anion.  Because of the opposite charge of cation and anion they will readily form ionic compounds.  Iona consisting of only a single atom known as monoatomic ions and more than two atoms form polyatomic ions.

(b)

Interpretation Introduction

Interpretation:

The ions and the number of each are present in ${\text{Mg}}_{\text{3}}{{\text{(PO}}_{\text{4}}\text{)}}_{\text{2}}$ has to be determined.

Concept Introduction:

“Refer sub-part (a)”.