Chapter 18, Problem 18.101CHP

(a)

Interpretation Introduction

Interpretation:

Oxidation number of Oxygen in ${\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}$ has to be identified.

Concept Introduction:

Oxidation number: Oxidation number is defined as degree of oxidation (ie. loss of an electrons) of an atom within the chemical compound.

There is slightly difference between oxidation state and oxidation number.  In oxidation state, there is electronegativity of an atom in a bond should be considered.  However, when describing oxidation number, electronegativity does not considered.

(b)

Interpretation Introduction

Interpretation:

Oxidation number of Oxygen in ${\text{SrO}}_{\text{2}}$ has to be identified.

Concept introduction:

Oxidation number: Oxidation number is defined as degree of oxidation (ie. loss of an electrons) of an atom within the chemical compound.

There is slightly difference between oxidation state and oxidation number.  In oxidation state, there is electronegativity of an atom in a bond should be considered.  However, when describing oxidation number, electronegativity does not considered.

(c)

Interpretation Introduction

Interpretation:

Oxidation number of Oxygen in ${\text{SnO}}_{\text{2}}$ has to be identified.

Concept introduction:

Oxidation number: Oxidation number is defined as degree of oxidation (ie. loss of an electrons) of an atom within the chemical compound.

There is slightly difference between oxidation state and oxidation number.  In oxidation state, there is electronegativity of an atom in a bond should be considered.  However, when describing oxidation number, electronegativity does not considered.

(d)

Interpretation Introduction

Interpretation:

Oxidation number of Oxygen in ${\text{CsO}}_2$ has to be identified.

Concept introduction:

Oxidation number: Oxidation number is defined as degree of oxidation (ie. loss of an electrons) of an atom within the chemical compound.

There is slightly difference between oxidation state and oxidation number.  In oxidation state, there is electronegativity of an atom in a bond should be considered.  However, when describing oxidation number, electronegativity does not considered.