which molecules are alkenes
Alkenes are molecules with carbons bonded to hydrogens which contain at least two sp 2 hybridized carbon atoms. That is, to say, at least one carbon-to-carbon double bond, where the carbon atoms, in addition to an electron pair shared in a sigma (Ï) bond, share one pair of electrons in a pi (Ï) bond between them.aming Alkenes [edit]. Alkenes are named as if they were alkanes, but the -ane suffix is changed to -ene. If the alkene contains only one double bond and that double bond is terminal (the double bond is at one end of the molecule or another) then it is not necessary to place any number in front of the name.