Hydrogen bonding
Leaving Cert Chemistry · Behaviour of Matter
Higher Level
A comparatively strong intermolecular attraction between a hydrogen atom bonded to nitrogen, oxygen or fluorine in one molecule and a lone pair on the nitrogen, oxygen or fluorine atom of a neighbouring molecule. It explains the unusually high boiling point of water and why small alcohols mix freely with water.
Ordinary Level
A strong pull between molecules that have hydrogen joined to oxygen, nitrogen or fluorine. It is why water has such a high boiling point.
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