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Absoprtion specrum, identifying the 1 electon atom

  1. Apr 6, 2013 #1
    1. The problem statement, all variables and given/known data
    The energies of some transitions observed in the absorption spectrum of an unknown one electron ion ( eg He+) are listed. Given that these transitions originate from the lowest energy level suggest an identification of the unknown ion

    UNKNOWN ION (CM^-1)
    1646254.1
    1560886.3
    1316965.2



    2. Relevant equations

    ok, i am using Delta E = Rh (1/nf^2 - 1/ni^2) where f stands for final and i for initial

    3. The attempt at a solution

    the problem is that I am not getting numbers close to integer values. Im not sure if the q even requires a numerical answer, as 3 ionisation energies must mean that the element is Be. I really don't know where to start. pls help
     
    Last edited: Apr 6, 2013
  2. jcsd
  3. Apr 6, 2013 #2

    Borek

    User Avatar

    Staff: Mentor

    These are "some transitions", so it is not a complete list of three ionization energies.

    Obvious line of attack is to try to find Z from the data given.
     
  4. Apr 6, 2013 #3
    How?

    how would you find z? sorry, I have no clue
     
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