Chapter 8, Problem 8A.17E

(a)

Interpretation Introduction

Interpretation:

The oxide $\left({\text{NO}}_{\text{2}}\right)$ has to be classified as acidic, basic or amphoteric.

Concept Introduction:

All the main group elements except noble gas react with oxygen.  Soluble ionic oxides are found on the left of the periodic table.  Molecular oxides are found on the right side of the periodic table.

Metallic elements with low ionization energy form basic ionic oxides.

Elements with intermediate ionization energies form amphoteric oxides.

The general pattern of oxides is,

	s-block	p-block	d-block
Type	Ionic	Covalent	Ionic
Acid-base character	Basic	Amphoteric to acidic	Basic to amphoteric

(b)

Interpretation Introduction

Interpretation:

The oxide $\left({\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}\right)$ has to be classified as acidic, basic or amphoteric.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The oxide $\left(\text{B}{\left(\text{OH}\right)}_{\text{3}}\right)$ has to be classified as acidic, basic or amphoteric.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The oxide $\left(\text{MgO}\right)$ has to be classified as acidic, basic or amphoteric.

Concept Introduction:

Refer to part (a).