they contain unreactive atoms
The compounds of hydrogen and carbon in which all the four valencies of the carbon are not fully utilized and they contain a double bond are called alkenes. For example : butene and ethene.Alkenes...
Yes it is an alkene. It is in fact the smallest alkene molecule. Its chemical formula is C2 H4. Hope this helps :P
Some examples of alkenes are Ethene, Propene, Butene, Pentene. They all contain double-bonds, with the general formula as CnH2n.
cis-2-pentene