Hydrogen bond is a special type of dipole-dipole interaction that occurs between an atom of hydrogen and the most electronegative elements as oxygen (O), nitrogen (N) or fluorine (F). This kind of bond is stronger than van der Waals interactions, but weaker than covalent or ionic bonds. In hydrogen bonds the electronegative atoms attract the electrons of hydrogen atoms, creating a dipole, the hydrogen atom being positive and the electronegative atom negative. The hydrogen bond is the stronger intermolecular interaction.
The best example of this interaction is the molecule of water. This molecule has polar ends that allows water do create hydrogen bonds with others molecules of water. As shown in the image:
Licenciatura em Bioquímica
TP1, Grupo 1
Beatriz Pereira
Catarina Ribeiro
Joana Gomes
José Ribeiro
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