Atomic StructureMedium
Question
An electrons of a stationary hydrogen atom passes from the fifth energy level to the ground level. Thevelocity that the atom acquired as a result of photon emission will be
(m is the mass of the electron, R, Rydberg constant and h, Planck′s constant)
(m is the mass of the electron, R, Rydberg constant and h, Planck′s constant)
Options
A.
B.
C.
D.
Solution
Momentum of atom, P = 
Velocity of H2 atom =
Velocity of H2 atom =
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