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Energy for an electron in an orbital

  1. Aug 22, 2015 #1
    Is there any energy difference b/w two electrons of the same orbital having anti parallel spin?
  2. jcsd
  3. Aug 22, 2015 #2


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  4. Aug 23, 2015 #3


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    It depends on whether there is an external magnetic field or not. For the case with external magnetic field, look up the Zeeman effect, in particular the "anomalous" Zeeman effect.
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