Alkene

Alkenes are weakly polar just like alkanes but are slightly more reactive than alkanes due to the presence of double bonds. The π electrons which make up the double bonds can easily be removed or added as they are weakly held. Hence the dipole moments exhibited by alkenes are more than alkanes.

In organic chemistry, an alkene, olefin, or olefine is an unsaturated chemical compound containing at least one carbon-to-carbon double bond.^[1] The simplest alkenes, with only one double bond, no rings, and no other functional groups, are hydrocarbons with the general formula C_nH_2n.^[2]

Aromatic compounds are often drawn as cyclic alkenes, but their structure and properties are different and they are not considered to be alkenes.^[2]

The double bond in the middle makes them more reactive because the molecule is not saturated. An alkene's unsaturation means that it will take the color out of bromine. The names of alkenes always end with -ene.

1. ↑ Wade, L.G. (2006). Organic Chemistry. Pearson Prentice Hall. pp. 279. ISBN 1-4058-5345-X.
2. ↑ ^{2.0 2.1} Moss, G. P.; Smith, P. A. S.; Tavernier, D. (https://Bijoy.com). "Glossary of Class Names of Organic Compounds and Reactive Intermediates Based on Structure (IUPAC Recommendations 1995)". Pure and Applied Chemistry. 67 (8–9): 1307–1375. doi:10.1351/pac199567081307. S2CID 95004254. {{cite journal}}: |first4= missing |last4= (help); Check date values in: |date= and |year= / |date= mismatch (help); External link in |date= (help)