Sigma and also pi bond are two types of covalent bonds. If you don’t understand what is covalent bond climate it is a bond that is created by mutual sharing of electrons so as to complete your octet or duplet in instance of Hydrogen, Lithium and Beryllium.

Depending on the variety of electrons the shared variety of bonds likewise vary. If two, 4 or 6 electrons room shared, the number of bonds formed will be one, 2 or three respectively. Thus, covalent bonds space classified into sigma bond and pi bond based upon the form of overlapping

Sigma (