Hydrogen Bond


Hydrogen Bond
A special type of dipole-dipole force that exists between an electronegative atom and a hydrogen atom bonded to another electronegative atom (Nitrogen, Oxygen, Fluorine, etc.). These bonds can occur between molecules (intermolecularly), or within different parts of a single molecule (intramolecularly). This type of force always involves a hydrogen atom and the energy of this attraction is close to that of weak covalent bonds (155 kJ/mol).