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Energy level split

  1. Jun 9, 2013 #1
    can anyone help me explain more detail about energy level split with the system of two atoms?
    Please see this video at 06:32:http://www.youtube.com/watch?v=y_GZn4o8gaE
    Thank you.
  2. jcsd
  3. Jun 9, 2013 #2
    Haha, I have just seen the answer:
    Consider 2 atoms of copper. So now we will think of this as a single two-atom system and not as a system with 2 atoms in it. This system now has 58 electrons(not 28 electrons in two atoms). How do we fill these electrons in the sub-shells?The 1s subshell can only accommodate 2 electrons. But we want that it should have 4 e's. So each energy level of the isolated atom splits into two levels for the two-atom system. Thus 4 e's can now be accommodated in the two levels of the 1s sub-shell.
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