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Covalent Bonding |

Covalent Bonding. Noble gases have complete outer electron shells, which make them stable. The coming together and sharing of electron pairs leads to the formation of a chemical bond known as a covalent bond. Two chlorine atoms come together and share their electrons to form a molecule of chlorine. In this way, each atom will have eight electrons in its valence shell. As a single pair of electrons is shared between them, the bond is known as a single covalent bond. A single covalent bond is represented by a single dash between the atoms. When two oxygen atoms come together, they each share 2 electrons to complete their octets. Since they share two pairs of electrons, there is a double bond between the oxygen atoms. Similarly, Nitrogen atoms share a triple covalent bond to form a molecule of Nitrogen.