A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
- The two electronegative atoms involved in a hydrogen bond are not bonded covalently; they are non-covalent, electrostatic partners.
- Each hydrogen bond between molecules is much weaker than the covalent bonds holding the atoms together within the molecule.
- Compared to say, a covalent bond, a hydrogen bond is approximately one tenth of that strength.
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