Determine the mass defect for (a) helium 2He3, which has an atomic mass of 3.016 030 u, and (b) the isotope of hydrogen known as tritium 1T3, which has an atomic mass of 3.016 050 u. (c) On the basis of your answers to parts (a) and (b), state which nucleus requires more energy to disassemble it into its separate and stationary constituent nucleons.