Atomic StructureEasy
Question
Two hydrogen atoms are in excited state with electrons residing in n = 2. First one is moving towards left and emits a photon of energy E1 towards right. Second one is moving towards left with same speed and emits a photon of energy E2 towards left. Taking recoil of nucleus into account during emission process
Options
A.E1 > E2
B.E1 < E2
C.E1 = E2
D.information insufficient
Solution
From momentum conservation, v′ > v″ Thus E2 > E1
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