Intermolecular Forces

AP Chemistry· difficulty 1/5

Boiling points of F2, Cl2, Br2, and I2 are plotted against molar mass; the trend is increasing BP with increasing mass.

The trend in halogen boiling points is best explained by:

A
$Increasing London dispersion forces with size/polarizability$
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B
$Hydrogen bonding$
C
$Increasing dipole moments$
D
$Ionic bonding$

Explanation

All halogens are nonpolar diatomics; only LDF acts. Larger electron clouds (greater polarizability) yield stronger LDF and higher boiling points.

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