Ethylene or propylene
Else clues• C2H4, e.g.
• Certain hydrocarbon
• Compound also called an olefin
• Compound with a carbon double bond
• Compound with a Pi-bond
• Hydrocarbon series
• Hydrocarbon with one double bond
• Olefin
• Open chain hydrocarbon
• Part of a carbon chemical chain
• Unsaturated hydrocarbon
• Any unsaturated aliphatic hydrocarbon