Question

define covalent bond explain the exaple

Answer 1

A Covalent Bond is a 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. 

EXAMPLE


Examples of Covalent Bonding

Methane molecule (CH4) The electronic configuration of carbon is 2,4. It needs 4 more electrons in its outer shell to be like the noble gas neon.
Water molecule (H2O) One oxygen atom joins with two hydrogen atoms.
Carbon dioxide (CO2) One carbon atom joins with two oxygen atoms.


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Answer 2

⚡Heya⚡

Here is ur answer

A covalent bond in chemistry is a chemical link between two atoms or ions in which 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. 


Covalent Bond Examples

There is a covalent bond between the oxygen and each hydrogen in a water molecule (H2O). Each of the covalent bonds contains two electrons, one from a hydrogen atom and one from the oxygen atom. Both atoms share the electrons.

A hydrogen molecule, H2, consists of two hydrogen atoms joined by a covalent bond. Each hydrogen atom needs two electrons to achieve a stable outer electron shell. The pair of electrons is attracted to the positive charge of both atomic nuclei, holding the molecule together.

Phosphorus can form either PCl3 or PCl5. In both cases, the phosphorus and chlorine atoms are connected by covalent bonds. PCl3 assumes the expected noble gas structure, in which the atoms achieve complete outer electron shells. Yet PCl5 is also stable, so it's important to remember covalent bonds in chemistry don't always abide by the octet rule.


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