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Homework Help: (C2)2+ ion hybridization?

  1. Mar 22, 2013 #1
    According to the molecular orbital diagram of the (C2)2+ ion you its a stable ion, because it has a bond order of 1 & that means its a stable substance.

    Now if you draw the lewis structure you could obtain the geometric arrangement of the electron pairs ( groups) around the central atom. In this case its the following lewis structure:

    Now here you can find only 1 electron group around the central atom:

    Now it if were 2, 3, 4, 5 or 6 you could determine the arrangement of the electron pairs (groups) around the central atom. From this arrangement we could determine the hybridization of the central atom.

    But the problem is that there is only 1 electron group, so what is the geometrical arrangement of the electron pairs(groups) around the central atom?
    I would like to know if there is hybridization in the (C2)2+ ion, but I cant figure out because of this problem. Could someone please help me?

    Thanks in advance!
  2. jcsd
  3. Mar 25, 2013 #2


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    Gold Member

    I think that C22+ is more appropriately explained by MOT. Try writing the MOT config of C2 and then remove two electrons to get the answer.
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