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.
City, state and federal officials are still investigating the deadly nightclub shooting in Orlando, Florida, but have announced the names of most of the victims. Officials say 50 people died in the attack at Pulse Orlando, a gay nightclub, including the gunman. An additional 53 people were injured. At least three of those killed were Mexican nationals, according to Mexicoâs Foreign Ministry Department. During a vigil in downtown Orlando tonight, Mayor Buddy Dyer said city officials said all 49 victims have been identified.