Chapter 3, Problem 3.61E

(a)

Interpretation Introduction

Interpretation:

Oxidation number of phosphorus in ${\text{Li}}_{\text{7}}{\text{P}}_{\text{3}}{\text{S}}_{\text{11}}$ has to be determined.

Concept Introduction:

Oxidation is defined if there is loss of electrons. Reduction is defined if there is gain of electrons. Oxidation numbers are part of system that is calculated to account for the track of electrons.

(b)

Interpretation Introduction

Interpretation:

Oxidation number of titanium in ${\text{BaTiO}}_{\text{3}}$ has to be determined.

Concept Introduction:

Refer to part (a).