1. The problem statement, all variables and given/known data. Suppose the energy difference between the states n=2 and n=3 is E(eV), in an hydrogen atom. then the ionization potential in volts is: A) 13.2E B) 7.2E C) 3.2 E D) 0.56E 2. Relevant equations En = -13.7 × Z^2÷n^2 3. The attempt at a solution I just know the ionization energy is equal to the total energy in last stationary state. but i cant apply the concept on this problem.