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X-ray graph (characteristic X-rays)

  1. Oct 21, 2015 #1
    1. The problem statement, all variables and given/known data
    4. On which graph are the characteristic X-rays being portrayed correctly.
    2. Relevant equations
    Slika nove bitne slike.jpg


    3. The attempt at a solution
    ok I know that characteristic X-rays happen because the electrons in outer shells move to the lowest possible energy shell and that the change in energy equals the energy of the emited X-rays
    My question now looking at the picture I don't quite know why the graphs D and B are incorrect , I know that A can't be true and that C is the correct answer, but can someone explain to me why D and B are wrong ?
    Thanks
     
  2. jcsd
  3. Oct 21, 2015 #2

    mfb

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    Staff: Mentor

    B has a line where it should not have one.
    D: The energy levels are at high energies and close together which looks suspicious, but I don't think you can clearly rule it out without numbers.
     
  4. Oct 21, 2015 #3
    thanks for the answer
    Yeah that is what I was thinking
    D: is it completely impossible for an atom to emit x rays which are at high energie levels? and does an atom always emit X-rays only at the end part of the graph
     
  5. Oct 22, 2015 #4
    Update : I asked the professor why B could not be the right. his reply was :" B is not the wrong answer C is just more right." and he also said if I had choosen B he would not have marked it as a wrong answer
     
  6. Oct 22, 2015 #5

    mfb

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    Staff: Mentor

    Oh, well... fine.
     
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