Chapter 5, Problem 4SC

Interpretation Introduction

Interpretation:

The statement, “The Lewis structure of ${\text{H}}_{\text{2}}\text{O}$ is bent while that of ${\text{CO}}_2$ is a linear”, is to be explained.

Concept introduction:

According to VSEPR theory, the geometry of molecules is based on the force of repulsion between the electron pairs in the valence shell. The electron pairs minimize this repulsion by getting as far away from each other as possible.

The number of bonding pairs and lone pairs of electrons determines the shape of the molecule.

The order of force of repulsion between the various electron pairs is as follows:

lone pair-lone pair > lone pair-bond pair > bond pair-bond pair.