An alkene is an unsaturated hydrocarbon. Unsaturated means that it contains at least one double bond and hence, does not have maximum number of hydrogen atoms.
General formula for alkenes: CnH₂n
If (n = 3), the compound would be:
C₃H₂₍₃₎ = C₃H₆
Every alkene’s name ends in ‘-ene’.
An alkene’s prefix always changes according the number of carbon atoms present in the compound.
There cannot be an alkene with only 1 carbon atom. There needs to be a minimum of two carbon atoms for there to be a double bond present. So there is no alkene named methene.
|Name of Alkene||No. of Carbon atoms||Formula|