Prove that diproton can't exisit 1. The problem statement, all variables and given/known data As stated in the title I'm trying to prove that that di-proton(di-hydrogen) can't exist. M(p)=1.008665u M(n)=1.007825u M(3He)=3.016030u n-p=2.226Mev R=R(0)*A^1/3 R(0)=1.2*10^-15 2. Relevant equations None 3. The attempt at a solution What I did is that i calculated the Total binding energy of (3)He. Bt(He) = 7.716649Mev Bt(He) = (n-p) + (n-p) + (p-p) so p-p= 3.2646Mev Then I have calculated the electrostatic repulsion(U) between the protons. these 2 protons exist at distance R=1.511*10^-15 U=0.95Mev I've done something wrong because clearly Bt>U Where is my mistake?