Chapter 7, Problem 77QAP

Interpretation Introduction

(a)

Interpretation:

The meaning of the term ‘expanded octet’ needs to be explained.

Concept introduction:

• The ideal structure of a given molecule is deduced based on the octet rule according to which every atom bonds to another atom such that each acquires an octet or eight electrons around it.

Interpretation Introduction

(b)

Interpretation:

The meaning of the term ‘resonance’ needs to be explained.

Concept introduction:

• In a given molecule, there are bonding electrons as well as in certain cases non-bonding or lone pairs of electrons. The phenomenon in which these electrons show a tendency to delocalize or move around the molecule thereby giving rise to intermediate structures is referred to as resonance.

Interpretation Introduction

(c)

Interpretation:

The meaning of the term ‘unshared electron pair’ needs to be explained.

Concept introduction:

• The ideal structure of a given molecule is deduced based on the octet rule according to which every atom bonds to another atom such that each acquires an octet or eight electrons around it.
• The electrons around an atom can either be involved in bonding or remain non-bonding

Interpretation Introduction

(d)

Interpretation:

The meaning of the term ‘odd electron species’ needs to be explained

Concept introduction:

• The ideal structure of a given molecule is deduced based on the octet rule according to which every atom bonds to another atom such that each acquires an octet or eight electrons around it.
• Species with unpaired electrons are exceptions to the octet rule, these are odd electron species