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Homework Help: Maximum unpaired electrons in an atom

  1. Sep 13, 2012 #1
    1. The problem statement, all variables and given/known data
    If there are 13 electrons in M shell and one electron in N shell, the the number of unpaired electrons in such atom will be

    2. Relevant equations
    M- shell N- shell

    3. The attempt at a solution
    The configuration should be
    3s2 3p6 3d5 4s1
    hence the answer should be 6
  2. jcsd
  3. Sep 14, 2012 #2


    User Avatar
    Gold Member

    Yup, that's the configuration of Chromium.
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