Dear candidate

The Double Bond Equivalence(DBE) can be defined as the total number of unsaturation's present in the organic molecule and unsaturation is nothing but consisting a double bond or a cyclic or ring system. For example Benzene the number of double bonds in benzene is 3 and it has 1  ring which means 4DBE.

Hello,

DBE is the number of unsaturations present in an organic molecule .The term unsaturation means double bond or a ring system .The formula for DBE is :

DBE = C + 1 - H/2 + N/2 -X/2

where C is no. of carbon atoms , H is no. of Hydrogen atoms , N is no. of Nitrogen atoms and X is no. of Halogen atoms