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.
There was a controlled explosion near the shooting scene, but police said it was caused by a device intended to distract the shooter. Police also said the shooting was not connected to Friday's fatal shooting, also in Orlando, of The Voice singer Christina Grimmie. Rep. Alan Grayson, of Florida's 9th District, said during a news conference this morning that the attack was ideologically motivated.