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Homework Help: Bhors model of the atom

  1. Apr 19, 2008 #1
    1. The problem statement, all variables and given/known data
    in the line spectrum of atomic hydrogen there is also a group of lines known as the pfund series. these lines are produced when the electrons, excited to high energy levels, make transitions to the n=5 level.
    Determine (a) the longest wavelength and the (b) shortest wavelength in this series. (c) what region in the electromagnetic spectrum in which these lines are found.


    2. Relevant equations
    En=E1/n^2


    3. The attempt at a solution

    i think i have to find the energy levels it could have started from
    and then find the biggest jump and smallest made. but i dont know how to find the energy level it started from
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited: Apr 19, 2008
  2. jcsd
  3. Apr 19, 2008 #2

    Hootenanny

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    Welcome to PF,

    HINT: What energy does the de Broglie wavelength correspond to? Where did this energy come from?
     
  4. Apr 19, 2008 #3
    appologies

    sorry i copied the wrong problem
     
  5. Apr 19, 2008 #4

    Hootenanny

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    The pfund series starts from n=5, and includes transitions to higher energy levels, as stated in the question.
     
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