In organic chemistry, an alkene, or olefin, is a hydrocarbon containing one or more carbon –carbon double bonds. [1] The double bond may be internal or at the terminal position.

Although there is only one alkene with the formula C 2 H 4 (ethene) and only one with the formula C 3 H 6 (propene), there are several alkenes with the formula C 4 H 8.

Overall, the key to understanding alkene stability lies in their structure and geometry. Alkenes contain sp²-hybridized carbons with a trigonal planar geometry, which requires a flat arrangement around the …

Mar 25, 2026 · An alkene is a hydrocarbon that contains at least one carbon-carbon double bond. That double bond is what defines the entire class of molecules and drives nearly everything interesting …

Alkenes are a class of hydrocarbons that contain only carbon and hydrogens. They are unsaturated compounds that contain at least one carbon-to-carbon double bond. Another term that is often used …

The double-bonded carbons of an alkene are electron-rich, that is, the electron density is high in the region of the double bond. Therefore, the “signature” reaction of alkenes involves initial attack on an …

The vitamin A precursor found in both spinach and bell peppers is beta-carotene, an alkene. Beta-carotene consists of a long carbon chain with multiple double bonds with a substituted cyclohexene …