Define covalent bond (bsc 1st year classes)

 Define covalent bond :-

Covalent bond is formed by mutual sharing of electron between the cambine atom and the compound so formed is called covalent bond.

For ex. Oxygen, nitrogen, chlorine, etc.

One electron pair = single covalent bond 

Two electron pair = double covalent bond

Three electron pair = triple covalent bond

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