Explanation
The strongest type of van der Waals force is hydrogen bonding.
Hydrogen bonding is a special type of dipole-dipole interaction
That occurs when a hydrogen atom is bonded to a highly electronegative atom like oxygen, nitrogen, or fluorine.
This creates a strong attraction between the hydrogen atom in one molecule and
The lone pair of electrons on the electronegative atom in another molecule.
Because of its unique strength, hydrogen bonding significantly influences the properties of many substances, such as water.