What are the six possible alkenes for C5H10?

Here are the six possible alkene isomers of ##"C"_5"H"_10##.

Pentenes

• Pent-1-ene
• ##(E)##Pent-2-ene
• ##(Z)##Pent-2-ene

Methylbutenes

• 2-Methylbut-1-ene
• 3-Methylbut-1-ene
• 2-Methylbut-2-ene

Their structures are shown below.