A hydrogen atom is in state N = 2, where N = 1 is the lowest energy state. What is K+U in electron volts for this atomic hydrogen energy state? E2 = eV The hydrogen atom makes a transition to state N = 1. What is K+U in electron volts for this lower atomic hydrogen energy state? E1 = eV What is the energy in electron volts of the photon emitted in the transition from level N = 2 to N = 1? Ephoton = eV Which of the graphs below represents this transition?