Chapter 8, Problem 8.37AP

Interpretation Introduction

Interpretation:

The difference in physical state of Iodine and bromine should be explained in terms of intermolecular forces.

Concept Introduction:

Intermolecular forces in a molecule are the important factor which is responsible for the physical changes of the molecule.

The intermolecular forces in gases are negligibly small and the forces are comparatively stronger for liquids and the intermolecular forces are highest in solids.

The stronger the intermolecular forces, closer will be the molecules in contact and thus higher will be the boiling point and melting point of the substance.

Three types of intermolecular forces:

• London dispersion
• Dipole-dipole
• Hydrogen bonding