yttrium-90

yt·tri·um-90

(it'rē-ŭm), An artificial radioactive isotope with a physical half-life of 2.67 days, which decays with the emission of a 2.282 MeV β particle; used as an implant in pituitary ablation.

Ytterby,

village in Sweden. ytterbium (Yb) - a metallic element of the lanthanide group, atomic no. 70.yttrium (Y) - a metallic element, atomic no. 39.yttrium-90 - an artificial radioactive isotope with a physical half-life of 2.67 days.