write definition of covalent bond

A covalent bond is a type of chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. This type of bond can occur between any two atoms of the same element or between different elements, and it is characterized by the formation of a molecular orbital where the electron pair is shared.