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.
F- has the smallest radius. It has ten electrons, so only the first two 'shells' are filled. The others have electrons in the third 'shell', which is at a greater distance from the nucleus. Sice flourine is in the lowest energy level so it has the lowest radius. fluorine. it comes first in the periodic table out of all of them. so its nucleus has the least amount of protons and neutrons - which have much more mass than any electrons.