Radial: A word with diverse meanings in medicine and the biomedical sciences: 1  Pertaining to the radius, the smaller bone in the forearm. 2  The radial artery is so named because of its proximity to the radius. 3  Pertaining to the radius of a circle.
A 3D model of ethyne (acetylene), the simplest alkyne. In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbonâcarbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula CnH2nâ2.
Alkenes and Alkynes: Nomenclature. To determine the name of an alkene or alkyne using the I.U.P.A.C. Nomenclature. System, use the following simple rules: Name the parent compound using the longest continuous carbon chain containing. the double bond (alkenes) or triple bond (alkynes). Replace the -ane ending of the alkane with the -ene ending for an alkene or the -yne. ending for an alkyne.