Question

give the definition of covalent bonds and on which factors it depends?

Answer 1

the bond formed by the mutual sharing of electron between two or more atom is called covalent bond ..


it is depend upon the valence of electron

Answer 2

Covalent Bond Definition

A covalent bond is a chemical link between two atoms or ions where the electron pairs are shared between them. A covalent bond may also be termed a molecular bond. Covalent bonds form between two nonmetal atoms with identical or relatively close electronegativity values. This type of bond may also be found in other chemical species, such as radicals and macromolecules. The term "covalent bond" first came into use in 1939, although Irving Langmuir introduced the term "covalence" in 1919 to describe the number of electron pairs shared by neighboring atoms.

The electron pairs that participate in a covalent bond are called bonding pairs or shared pairs. Typically, sharing bonding pairs allows each atom to achieve a stable outer electron shell, similar to that seen in noble gas atoms.In covalent bonds, bond strength has more to do with bond length and electronegativity differences. Triple bonds are stronger than double bonds which are stronger than single bonds because high bond order means low bond length, which means increased attraction. This is intuitive. This is correlated with electronegativity difference: smaller anions are more electronegative. e.g. HF is stronger than HCl.