Ethylene (IUPAC name: ethene) is the simplest alkene with the chemical formula ( \(\rm C_{2}H_{4}\) ).The structural formula of ethylene is:

• The bonds between hydrogen and carbon are strong because they share their electrons directly.
• The double bond between carbon atoms is a bit weaker because the atoms are crowded, it has a mix of strong and weak bonds, and the electrons in one part of the bond are spread out instead of being tightly held.