# Is this a possible structural isomer for Butene(C4H8)

Today in school, my teacher was explaining the different types of alkenes. Examples included ethene, propene, and butene. She also showed us their structural formulas.
I tried to draw butene's formula and came up with this:

Is it correct?

• Welcome to chemistry.SE! If you had any questions about the policies of our community, please ‎visit the help center. – M.A.R. Nov 23 '15 at 15:42
• Correct; and the more common example is 1-butene: H2C=CH-CH2-CH3 – khaverim Nov 23 '15 at 16:41
• And there are also the cis- and trans- forms of 2-butene. And if one just went by the molecular formula, there's cyclobutane and methylcyclopropane as well. – orthocresol Nov 23 '15 at 21:34

1. has a formula of $\ce{C4H8}$, and thus contains four carbon atoms;
... it is indeed an isomer of butene (sometimes known as butylene). You got this one right!$%edit$