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.
President Obama calls attack on gay nightclub in Orlando an act of terror and an act of hate. WHAT WE KNOW SO FAR. Fifty people have been killed, including the assailant, and at least 53 injured in an attack inside a gay nightclub in the US state of Florida, authorities said, in the worst mass shooting in US history. Authorities identified the shooter on Sunday as Omar Mateen, a 29-year-old man born in New York with Afghan origins.