Chapter 4, Problem 4.99QP

(a)

Interpretation Introduction

Interpretation: The oxidation number of boron in each of the given compound is to be calculated.

Concept introduction: The oxidation state or number in a compound is the charge present on the individual atom if the all bonds are assumed to be ionic. The net charge present on a neutral compound is always zero. The charge present on the ionic compound is equal to the some of the charges of all the atoms present in that ionic compound.

To determine: The oxidation number of boron in ${\text{HBO}}_{\text{2}}$ (metaboric acid).

(b)

Interpretation Introduction

To determine: The oxidation number of boron in ${\text{H}}_3{\text{BO}}_3$ (boric acid).

(c)

Interpretation Introduction

To determine: The oxidation number of boron in ${\text{Na}}_2{\text{B}}_4{\text{O}}_7$ (sodium borate).