BRAINCAKEInduced Dipole-Dipole Interactions (London Forces)
Intermolecular forces are weak interactions between the dipoles of molecules. There are three types of intermolecular forces: induced dipole-dipole interactions (London forces), permanent dipole-dipole interactions and hydrogen bonds. Intermolecular forces are largely responsible for physical properties such as melting and boiling points.
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Key terms in this lesson
- Dipole
- A separation of opposite partial charges caused by an uneven distribution of the bonding electron pair.
- Permanent dipole-dipole interactions
- Attractive forces between the permanent dipoles of polar molecules.
- Hydrogen bond
- A strong permanent dipole-dipole interaction between a hydrogen atom bonded to N, O or F and a lone pair on an electronegative N, O or F atom of another molecule.
More in Shapes and Intermolecular Forces
- More examples.
- Electronegativity
- Bond Polarity
- Polar Solvents and Solubility
- Permanent dipole-dipole interactions
- Solubility of Simple Molecules
- Hydrogen Bonds
- Boiling Points of Hydrides and Intermolecular forces
All 13 lessons in Shapes and Intermolecular Forces · All OCR AS-level Chemistry topics