Rank the following compounds in order of increasing strength of intermolecular forces.

Question

Quizplus · Accepted Answer

Compounds I and III are nonpolar molecules held together by London dispersion forces, while compound IV is a polar molecule held together by dipole-dipole interactions. Compound II is a polar molecule with hydrogen bonding. Hydrogen bonding is the strongest intermolecular force, followed by dipole-dipole interactions, and then London dispersion forces. Therefore, the order of increasing strength of intermolecular forces is IV > I > III > II, which matches choice C.

Rank the Following Compounds in Order of Increasing Strength of Intermolecular