Noun
a covalent bond in which two pairs of electrons are shared between two atoms
Source: WordNetA double bond between two given atoms consists of one σ and one π bond, and a triple bond is one σ and two π bonds. Source: Internet
An example of alkene polymerization, in which each styrene monomer's double bond reforms as a single bond plus a bond to another styrene monomer. Source: Internet
For bridged alkenes, Bredt's rule states that a double bond cannot occur at the bridgehead of a bridged ring system unless the rings are large enough (8 or more atoms). Source: Internet
Fluoro is the highest-priority group on the left side of the double bond, and ethyl is the highest-priority group on the right side of the molecule. Source: Internet
Figure 1: Dehydration synthesis (condensation) reaction forming an amide Cis/trans isomers of the peptide group Significant delocalisation of the lone pair of electrons on the nitrogen atom gives the group a partial double bond character. Source: Internet
Cis–trans and E-Z isomerism main Stereoisomerism about double bonds arises because rotation about the double bond is restricted, keeping the substituents fixed relative to each other. Source: Internet