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Posted by on Monday, February 21, 2011 at 8:16pm.

Hund's rule states that each orbital in a sublevel will contain one electron before another electron will fill an orbital? Why?

  • science/chem - , Monday, February 21, 2011 at 10:08pm

    The answer I always got was that it takes energy to make the electrons pair because they are of opposite spin. Thus it is easier for them to go into a degenerate orbital (same energy level) where there is no opposing force.

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