What are alkenes?

Answer:
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 are unsaturated hydrocarbons.
First answer by Sandalian. Last edit by Emilydaffern4. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 3 [recommend question].