Radioactive isotope. Radioactive isotope, also called radioisotope, radionuclide, or radioactive nuclide, any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays. 1  A brief treatment of radioactive isotopes follows.
BLM sympathizer Markeith Loyd (Orlando cop killer) caught. Posted on 17 January 2017. BLM sympathizer Markeith Loyd (Orlando cop killer) has finally been caught. Living about five miles away from where he killed one cop and was indirectly responsible for a second copâs it took this long to find the gangbanger thug.
By Katie Mettler By Katie Mettler March 21 at 5:50 AM. Days after Florida Gov. Rick Scott took state prosecutor Aramis Ayala off a case for refusing to seek the death penalty against a man accused of killing an Orlando police officer, Ayala has filed a motion to stay on the case. (Reuters)