Chapter 1, Problem 64PP

Interpretation Introduction

Interpretation:

Reason for $S{O}_2$ has dipole moment whereas $C{O}_2$ do not has dipole has to be identified.

Concept Introduction:

The polar molecules possess dipole moment due the charge separation in it. There is no charge separation in the non-polar molecules. So, non-polar molecules do not possess dipole moment in them.

The dipole moment is produced by two equal but opposite charges separated by a distance

The electronegativity of the atoms in a bond determines in which direction the expected dipole moment would be. The dipole moment will be directed towards the high electronegative atom in the bond.

The steric number is the combination of both number of $\sigma$ -bonds and number of lone pairs involved in a particular molecule.