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Van der Waals' Forces and Hydrogen Bonding

  1. Aug 28, 2015 #1
    Induced dipoles result in Van der Waals' forces and permanent dipoles in hydrogen bonds, right? But how do you know is a compound has formed hydrogen bonds or Van der Waals' forces? For example, HF forms hydrogen bonds while HCl forms Van der Waals' forces and not hydrogen bonds. But in HCl, H is delta positive and Cl is delta negative, so shouldn't it form hydrogen bonds? But then when do Van der Waals' forces form?
    Thanks.
     
  2. jcsd
  3. Aug 28, 2015 #2

    mfb

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    Staff: Mentor

    Those categories don't have a sharp dividing line. Some bonds are very van-der-Waals-like, some are very hydrogen-bond-like, some are somewhere in between.
     
  4. Sep 1, 2015 #3
    Oh, thanks!
     
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