BRAINCAKEHydrogen Bonds
Hydrogen bonds are permanent dipole-dipole interactions between the hydrogen in a H-F, H-N or H-O bond and an electronegative atom containing a lone pair such as oxygen, nitrogen and fluorine and are the strongest type of intermolecular interactions having some covalent character.
The shape around the hydrogen atom is linear.
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Key terms in this lesson
- Base
- A proton acceptor.
- Lone pair
- A pair of outer-shell electrons that is not involved in bonding.
- 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.
More in Shapes and Intermolecular Forces
- More examples.
- Electronegativity
- Bond Polarity
- Polar Solvents and Solubility
- Induced Dipole-Dipole Interactions (London Forces)
- Permanent dipole-dipole interactions
- Solubility of Simple Molecules
- Boiling Points of Hydrides and Intermolecular forces
All 13 lessons in Shapes and Intermolecular Forces · All OCR AS-level Chemistry topics