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.
50 People Killed, Many More Wounded, in Orlando Club Mass Shooting By Allison Benedikt, Seth Maxon, Josh Voorhees, Jeremy Stahl, and Ben Mathis-Lilley Orlando police officers outside of Pulse Nightclub in Florida after the shooting that killed 50 and injured at least 53. Gerardo Mora/Getty Images Fifty people were killed and another 53 wounded early Sunday when a gunman opened fire in a crowded LGBTQ nightclub in Orlando, Florida. The shooter has been identified by law enforcement as Omar Mateen, a 29-year-old American citizen living in Florida who worked as a security guard.