The elements that are formed naturally by nuclear fission or through the intentional synthesis in nuclear reactors or particle accelerators are called Radio Active Elements. All elements can have radioactive isotopes. If enough neutrons are added to an atom, it becomes unstable and decays. The increasing atomic number does not necessarily make an atom more unstable. Natural radioisotopes may generate from nucleosynthesis in stars and supernova explosions. Primarily, the radioisotopes have half-lives until they get stable for all practical purposes. …