Chapter 12 - Liquids, Solids, and Intermolecular Forces - Exercises - Questions - Page 440: 24

Dipole -Dipole forces: These forces are present in all polar molecules and have permanent dipoles; the positive end of one dipole interacts with the negative end of another dipole. If a molecule is polar, then it has dipole-dipole interactions with other polar molecules.

Dipole -Dipole forces: These forces are present in all polar molecules and have permanent dipoles; the positive end of one dipole interacts with the negative end of another dipole. If a molecule is polar, then it has dipole-dipole interactions with other polar molecules.