Hydrogen bond
= Hydrogen bond
{wiki=Hydrogen_bond}
A hydrogen bond is a type of attractive intermolecular force that occurs between a hydrogen atom covalently bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) and another electronegative atom. In this interaction, the hydrogen atom carries a partial positive charge due to the difference in electronegativity between itself and the atom it is bonded to.