Radioactivity By: lilticklemeelmo_23 Radioactivity a.k.a. radioactive decay, is the steps taken in which the atomic nuclei of unstable isotopes release fast-moving particles and energy. There are three types of radioactive decay: (each based on which kind of radiation released by the nucleus) alpha decay, beta decay, and gamma decay. Gamma rays, also called gamma radiation, are the most energetic radiation. In a radioactive isotope, the gamma rays come from the nucleus of the …showed first 75 words of 352 total…

…showed last 75 words of 352 total…different numbers of neutrons. Isotopes are used in modern medicine for research and diagnosing diseases. Example: carbon-14 has a mass number of 14 and the atomic number of 6, but carbon-12 has the mass number of 12 and the atomic number of 6. These elements have a different amount of neutrons. Bibliography 1. Physical Science by Prentice Hall 2. http://www.web.ask/top?q=what+is+radioactivity%.com 3. http://accessexcellence.org/AE/AE 4. http://education.jlab.org/glossary/alphadecay.html