PHYSICAL CHEMISTRY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site covalent bond A chemical bond formed when two atoms share two valence electrons, one contributed by each of the atoms. Unlike ionic bonds, covalent bonds connect specific atoms and so can give rise to true, discrete molecules. The electrons in a covalent bond are only shared equally when the atoms are identical. In most covalent bonds the electrons are held to a greater extent by one atom than by the other. See also electronegativity. Related category    • PHYSICAL CHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP