Intermolecular force

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An intermolecular force is a force acting between molecules.

Dipole-dipole interactions

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.

Van der Waals force

Main article: Van der Waals force

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

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