Naming Alkenes and Alkynes Step 3-Write the full name using suffix -ene in place of- ane If more than one double bond indicate position and use suffixes -diene,-triene,and so on CH3 CH3CH2CH2CH-CHCH3 CH3CHCH=CHCH2CH3 65 4321 12345-6 Hex-2-ene 2-Methylhex-3-ene CH3CH2 H 2C=C1 CH3 CH3CH2CH2 H 5 4 3 H29=99H=gH2 2-Ethylpent-1-ene 2-Methylbuta-1,3-diene ▪ Step 3 - Write the full name using suffix -ene in place of - ane ▪ If more than one double bond indicate position and use suffixes -diene, -triene, and so on Naming Alkenes and Alkynes