hey guys. i have answered my question but i am not quite sure about it. Four hydrogen atoms fuse to produce one helium nucleus.calculate how many MeV of energy is released in this process. You are calculating how much energy is released by the fusion of four hydrogen atoms. what i have done: average binding energy 4 H: 0.4*4 MeV = 1.6MeV Then: Average binding energy of He: 9 MeV. SO the energy release would be 9 MeV - 1,6MeV = 7.4 MeV. THANKS.