Show that an electron jumping down from the 6thexcited state down to the 5th excited state in ahydrogen atom emits an infrared photon of 12,367nm.
Show that in a hydrogen atom moving away from a bright star, andits electron jumps up from the 2nd excited state up to the3rd excited state and has absorbed a photon with awavelength of 690 nanometers. How fast is the atom moving? Showyour work.
