Final answer:
The three types of intermolecular forces are London Dispersion, dipole-dipole, and hydrogen bonding.
Step-by-step explanation:
There are three types of intermolecular forces: London Dispersion, dipole-dipole, and hydrogen bonding, collectively termed van der Waals forces. London Dispersion forces arise due to temporary shifts in electron density, creating an instantaneous dipole.
Dipole-dipole forces occur between molecules with permanent dipoles, where the positive end of one molecule attracts the negative end of another. Hydrogen bonding is a special type of dipole-dipole interaction that occurs when a hydrogen atom is bonded to a highly electronegative atom like nitrogen, oxygen, or fluorine.