Intermolecular force

An intermolecular force is a force acting between molecules.

## Dipole-dipole interactions[edit]

Dipole-dipole interactions are occur between permanent dipoles in molecules. The strength depends on the distance and relative orientation of the dipoles. The dipole-dipole interactions are weaker than the Hydrogen bond but stronger than the Van der Waals force.

Interactions between dipoles and Ions are also possible.

## Hydrogen bonds[edit]

Main article: Hydrogen bond

A hydrogen bond is a force between a hydrogen atom and another particle.

## Van der Waals force[edit]

Main article: Van der Waals force

The weakest form of intermolecular force is the Van der Waals force, which is formed through electrostatic attaction.