(a) A hydrogen atom is at rest in the n=3 state and absorbs a photon of wavelength 500 nm, ionizing…

(a) A hydrogen atom is at rest in the n=3 state and absorbs a photon of wavelength 500 nm, ionizing the atom. Assume all the extra KE goes to the electron and not the proton. Is the electron relativistic? Justify your answer. (2 points)