See under naphthyl.
Also called alpha-naphthyl group, alpha-naphthyl radical. the univalent group C 1 0 H 7 –, having a replaceable hydrogen atom in the first, or alpha, position; 1-naphthyl group.
Also called beta-naphthyl group, beta-naphthyl radical. the univalent group C 1 0 H 7 –, having a replaceable hydrogen atom in the second, or beta, position; 2-naphthyl group.
a white to reddish, crystalline, water-soluble, extremely toxic solid, C 10 H 9 N, used chiefly in the manufacture of azo dyes. Historical Examples Coal Raphael Meldola Coal Raphael Meldola
a process by which fatty acids are degraded, involving oxidation of the beta carbons and removal of successive two-carbon fragments from the fatty acid.
- Beta particle
an electron or positron emitted from an atomic nucleus in a certain type of radioactive decay. Historical Examples A Brief Account of Radio-activity Francis Preston Venable noun a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission beta particle A high-speed electron or positron, usually emitted by an atomic nucleus […]
- Beta radiation
beta radiation beta radiation [(bay-tuh)] Note: Beta radiation, unlike alpha radiation, has some penetrating power and can pass through clothing and wooden walls.