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De broglie wavelength?

  1. Oct 28, 2011 #1
    1. The problem statement, all variables and given/known data
    In the Bohr model of the hydrogen atom, if the electron is in the second orbit with a radius of 2.12 Å. What is the de Broglie wavelength of the electron?

    2. Relevant equations

    λ = 4h^2ε/me^2

    3. The attempt at a solution

    I found this equation hunting around online and figured out that the constant is 2 times the energy level, but I do not have all of this information. How would I solve this problem?
     
  2. jcsd
  3. Oct 28, 2011 #2

    dextercioby

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    What's the connection between the orbit and energy of the electron on that orbit ? Then the energy is simply h[itex]\nu[/itex] from which [itex] \lambda[/itex] is easily derived.
     
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