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Need Help please

  1. Oct 28, 2006 #1
    Need Help please!!!

    Which of the following compounds have a nonzero dipole moment?

    a) SO4-2 b) BF3 c) O2 d) AlHI2

    i really need help with this... anyone kno this?
  2. jcsd
  3. Oct 30, 2006 #2
    Have you drawn out each structure? Be cautious of the 3-dimensional structure of each (e.g. tetrahedral arrangements).
  4. Nov 4, 2006 #3
    for this all you do is determine if they are polar one shouldnt be polar to have a zero dipole moment. note take care BF3 is a below octet electron dot diagram.
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