Chapter 15, Problem 27E

Interpretation Introduction

Interpretation:

The principle intermolecular forces present in $\text{NH}{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}$, ${\text{CH}}_{\text{2}}{\text{F}}_{\text{2}}$ and ${\text{C}}_{\text{3}}{\text{H}}_{\text{8}}$ are to be identified.

Concept introduction:

The intermolecular forces are the interaction between molecules which is responsible for holding these molecules together. Based on electrostatic interaction, three kinds of intermolecular forces are present. They are dipole forces, induced dipole forces, and hydrogen bonds.

The dipole forces are attractive forces between two permanent dipoles. The interaction is between the positive end of one polar molecule and the negative end of another polar molecule. The induced dipole interaction occurs when an ion or a dipole induces a temporary dipole in an atom or a molecule with no dipole. The induced dipole forces are the attraction forces between molecules having temporary dipoles.