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DEAR SIR , IWANT TO KNOW THAT IF SINGLE BONDS , DOUBLE BONDS , TRIPLE BONDS ARE COMING UNDER COVALENT BONDS

Covalent bonds can be single, double, or triple. If only one pair of electrons is shared, a single bond is formed. This single bond is a sigma bond (s), in which the electron density is concentrated along the line that represents the bond joining the two atoms.

However, double and triple bonds occur frequently (especially among carbon, nitrogen, oxygen, phosphorus, and sulfur atoms) and come about when atoms can achieve a complete octet by sharing more than one pair of electrons between them. If two electron pairs are shared between the two atoms, a double bond forms, where one of the bonds is a sigma bond, and the other is a pi bond (p). A pi bond is a bond in which the electron density is concentrated above and below the line that represents the bond joining the two atoms. If three electron pairs are shared between the two nuclei, a triple bond forms. In a triple bond, the first bond to form is a single, sigma bond and the next two to form are both pi.


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