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Homework Help: Hund's rule spin

  1. Dec 7, 2008 #1
    http://en.wikipedia.org/wiki/Image:Si_Hund.png

    can someone help clarify something for me
    in this diagram why is it that the arrow is placed in +1 first and in my text book it is placed in -1 first?
     
  2. jcsd
  3. Dec 7, 2008 #2

    Borek

    User Avatar

    Staff: Mentor

    Does it really matter? As long as there is no external magnetic field these orbitals are degenerated, so they can be occupied in any order.
     
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