A hydrogen bond is a strong form of a covalent bond. A covalent bond is one where two nonmetals share electrons. A hydrogen bond is where a hydrogen shares electrons with a very electronegative element, such as oxygen, nitrogen and fluoride.
hydrogen bonds are intermolecular, that is, occur between molecules or between different parts of one moleculeThe hydrogen bonds are pretty strong hencehydrogen bonds are only about 1/10 as strong as a covalent bond
