Question

The boiling point of alkyl halide are higher than those of corresponding alkanes because of:

• A. dipole-dipole interaction
• B. dipole-induced dipole interaction
• C. $H-$bonding
• D. none of the above

Answer 1

The correct option is A dipole-dipole interaction

Due to dipole-dipole interactions the boiling point of alkyl halide is higher as compared to corresponding alkanes. Alkanes, being non polar, have weak van der waals forces of attraction. In alkyl halides, $C-X$ bond is polar. Hence, strong dipole-dipole interactions are present. Greater is the strength of intermolecular forces, higher is the boiling point.