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.
Curtis Reeves, 71, has been named by the Pasco County Sheriff as the suspect in the movie theater shooting that killed one man and wounded a woman in Wesley Chapel, Florida, reports Tampa Bay Online. The altercation broke out at around 1 p.m. local time prior to a screening of the Mark Wahlberg movie Lone Survivor.