1. The hydrogen molecular ion, with one electron and two protons, is the simplest molecule. The equilibrium spacing between the protons is 0.11 nm. Suppose the electron is at the midpoint between the protons and moving at 1.5*10^6 m/s perpendicular to a line between the protons. How far (in nm) does the electron move before reaching a turning point? Because of their larger mass, the protons remain fixed during this interval of time. 2. K = 1/2 m*v^2 V = Uelec/q W = q*E*L 3. I think this problem has to do with conservation of energy, but I don't know how to approach it.