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Dipole moment arrows confusion

  1. May 8, 2016 #1
    My teacher posted on his website, Lewis structures of different compounds. One of them were N3-
    Untitled.png
    Why isn't there a dipole moment arrow pointing from the central atom to the other Nitrogen? Does the arrow only point from neutral atom to negatively charged atom?
     
  2. jcsd
  3. May 9, 2016 #2

    Borek

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    Staff: Mentor

    I am not sure I understand your question.

    First of all - is it obligatory to mark a dipole in the Lewis structure?
     
  4. May 9, 2016 #3
    Don't know but He wants it done
     
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