Chapter 2, Problem 36QRT

(a)

Interpretation Introduction

Interpretation:

The given formula is correct or not has to be given.  If not, the correct formula has to be written.

  $\text{AlCl}$

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.  Ions consisting of only a single atom known as monoatomic ions and more than two atoms form polyatomic ions.

General way of writing formulas:

    1 The group in which the given cation and anion is present has to be identified.

    2. For cations, the number of electrons losing in a reaction and for anion number of electrons gaining in a reaction has to be determined.

    3. Combine cation and anion and then deduce the formula.

(b)

Interpretation Introduction

Interpretation:

The given formula is correct or not has to be given.  If not, the correct formula has to be written.

  ${\text{NaF}}_{\text{2}}$

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The given formula is correct or not has to be given.  If not, the correct formula has to be written.

  ${\text{Ga}}_{\text{2}}{\text{O}}_{\text{3}}$

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The given formula is correct or not has to be given, if not the correct has to be written. The given formula is correct or not has to be given.  If not, the correct formula has to be written.

  $\text{MgS}$

Concept Introduction:

Refer to part (a).