Reference, Questions and Help => Nuke Q&A => Definitions => Topic started by: Rennhack on Nov 25, 2005, 01:21
Title: Radioisotope
Post by: Rennhack on Nov 25, 2005, 01:21
An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation. Approximately 5,000 natural and artificial radioisotopes have been identified.