A hydrogen atom emits a photon that has momentum with a
Chapter , Problem 18(choose chapter or problem)
A hydrogen atom emits a photon that has momentum with a magnitude of 5.452 3 10227 kg ? m/s. This photon is emitted because the electron in the atom falls from a higher energy level into the n 5 1 level. What is the quantum number of the level from which the electron falls? Use a value of 6.626 3 10234 J ? s for Plancks constant.
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