Chapter 11, Problem 11.14QP

Interpretation Introduction

Interpretation:

The molecular substances have moderately low melting point. This is to be explained.

Concept introduction:

Intermolecular forces are termed as the forces acting “between molecules” that is components of a substance.  Intramolecular forces are the forces that operate “within a molecule”. The prefix “inter” mean “among” and “intra” mean “within”.

Arrangement of major types of intermolecular forces in increasing order of strength:

$\text{London}\text{dispersion}\text{forces}\text{<}\text{Dipole-dipole}\text{forces}\text{<}\text{Hydrogen}\text{bonding}$