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Homework Help: Photon emissions from hydrogen

  1. Dec 10, 2007 #1
    [SOLVED] Photon emissions from hydrogen

    1. The problem statement, all variables and given/known data
    How many different photon emissions can hydrogen atom make going down from excited state 5 to ground level ?

    2. Relevant equations
    Thats what I'm lookin for.

    3. The attempt at a solution
    Simply by counting I got 10 different photon emissions.
    But is there some equation for doing this elegantly ?
  2. jcsd
  3. Dec 11, 2007 #2
    Any help, or link would be appreciated.
  4. Dec 11, 2007 #3
    you have, of course. tried google with a bunch of terms like: "hydrogen emission lines series excitation spectrum frequency", etc?
  5. Dec 11, 2007 #4


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    Staff Emeritus
    Science Advisor

    I'm not sure how a random google search is going to help.

    Anyway, this question has already been solved here.
  6. Dec 11, 2007 #5
    Of course you aren't, no-one else is either.
  7. Dec 11, 2007 #6
    I accidentaly posted two threads, then I marked one as solved ... ah
    Thanks .
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