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Homework Help: X ray problem

  1. Sep 25, 2007 #1
    1. The problem statement, all variables and given/known data

    Find the ratio of the energies of the K characteristic x rays of carbon to those of Magnesium.

    2. Relevant equations

    3. The attempt at a solution

    I did it using Bohr's expression of energy...Is there any other method to do it?
  2. jcsd
  3. Sep 25, 2007 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    If you are using Bohr, make sure you account for screening (to determine an effective nuclear charge) using Slater's rules.

    More likely, you are required to use Moseley's semi-empirical, somewhat-Bohr-based relationship. Your textbook should cover this.
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