Suffix: -eneMany of the same rules for alkanes apply to alkenes1. Name the parent hydrocarbon by locating the longest carbon chain that contains thedouble bond and name it ACCORDING to the number of carbons with the suffix -ene.H3C CH2 CH2C CH2CH2 H3CH3C CH2 CH2C CH2H3C CH2Parent = pentene not hexene (does not contain double bond)2. a. Number the carbons of the parent chain so the double bond carbons have thelowest possible numbers.H3C CH2 CH2 CH CH CH36 5 4 3 2 12-hexeneb. If the double bond is equidistant from each end, number so the first substituenthas the lowest number.H3C CH CH CH CH2 CH31 2 3 4 5 62-methyl-3-hexeneCH33. Write out the full name, numbering the substituents according to their POSITION in thechain and list them in alphabetical order.4. Indicate the double bond by the number of the first alkene carbon.H3C CH2 CH2 CH CH CH36 5 4 3 2 12-hexene5. If more than ONE double bond is present, indicate their position by using the numberof the first carbon of each double bond and use the suffix -DIENE (for 2 doublebonds), -triene (for 3 double bonds), -tetraene (for 4 double bonds), etc.H2C CH CH2 CH CH21 2 3 4 51,4-pentadieneH2C CH CH CH CH31 2 3 4 51,3-pentadiene