Review and discuss binding energy and why the mass of the assembled nucleons is less than the mass of the individual nucleons. Elicit that the stability of the nuclei increase from mass hydrogen, mass1 up to iron mass 56. After mass 56 the stability decreases. Nuclei greater than 56 will attempt to become more stable by transmutation into atoms with nuclei less closer to 56. Use uranium as the example, U-238 transmutes into Th-234/