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Describe the Bohr quantum conditions in terms of the wave theory: demonstrate that an electron in a hydrogen atom can move only along those round orbits which accommodate a whole number of de Broglie waves.

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Solution :The Bhor CONDITION
`oint p d x=oint(2pi ħ)/(lambda)d x= 2 pi n ħ`
For the CASE when `lambda` is constant (for example in circular ORBITS) this means
`2pi r=n lambda`
Here `r` is the radius of the circular ORBIT.


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