1. The problem statement, all variables and given/known data The atomic mass of gold-197 is 196.96654 u. How much energy is required to completely separate the nucleons in a gold-197 nucleus? 2. Relevant equations E = 196.96654 u x 931.5 3. The attempt at a solution I did the above calculation and got 1.83e5 MeV but im pretty sure I did this completely wrong. help?