Chapter 18, Problem 18.17QE

(a)

Interpretation Introduction

Interpretation:

Oxidation numbers of all atoms in ${\text{NO}}_{\text{2}}$ has to be assigned.

Concept Introduction:

The degree of oxidation of an atom in a compound is referred as the oxidation number or oxidation state.

(b)

Interpretation Introduction

Interpretation:

Oxidation numbers of all atoms in ${\text{CrO}}^{\text{-}}{}_{\text{2}}$ has to be assigned.

Concept Introduction:

Refer to (a)

(c)

Interpretation Introduction

Interpretation:

Oxidation numbers of all atoms in $\text{Co}{\left({\text{NO}}_{\text{3}}\right)}_{\text{3}}$ has to be assigned.

Concept Introduction:

Refer to (a)