An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The recoil velocity of the atom of mass m due to emitted photon is (R is the Rydberg constant; h is Planck’s constant):
Physics · Atomic Structure and X-rays · Atomic Structure & Bohr's Atomic Model
An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The recoil velocity of the atom of mass m due to emitted photon is (R is the Rydberg constant; h is Planck’s constant):
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