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Homework Help: Screening in Nucleus

  1. Apr 5, 2008 #1
    1. The problem statement, all variables and given/known data

    In xenon (Z = 54), what is the effective charge Zeff experienced by an electron in the M (n=3) shell?

    2. Relevant equations

    Zeff = Z - total electrons in K and L shells

    3. The attempt at a solution

    I think total electrons in K shell are 8 and in L shell are 18
    then Zeff = 54-26 = 28

    but I got wrong..

    please help me..
  2. jcsd
  3. Apr 5, 2008 #2
    never mind.. I got it.. :)
  4. Apr 6, 2008 #3
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