Chapter 21.10, Problem 21.2CC

Interpretation Introduction

Interpretation:

Why we need such low temperatures to liquefy gases like nitrogen, oxygen, and helium has to be explained.

Concept introduction:

Intermolecular forces:

The attraction and repulsion forces between the molecules is known as intermolecular forces.

Types of intermolecular forces are,

Strong ionic attraction

Dipole-dipole forces

Hydrogen bond

Covalent bonding

Weak London dispersion forces or van der Waal's force