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1. ( 20 pts.) Fhen 58.4nm refiation from a helium discharge lamb is directed on a sample of Krypton, electrons are ejected with a velocity of 1.59106m/s. The same radiation ejects electrons ffom Rubidium atoms with a velocity of 2.45106 m/s. What are the ioni-ation energies in eV of the two elements. Discuss the difference in their ionization energies. (1eV=1.61019J;c=3.0108m/s;h=6.63103Js;ms=9.11031kg)