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Ionic or covalent- Please check

  1. Nov 10, 2005 #1
    Indicate whether the following compounds are ionic or covalent?
    (NH4) 3 PO4
    I put this one as covalent. Is this correct. Thanks a lot.
  2. jcsd
  3. Nov 10, 2005 #2
    Whats your reasoning, whats the difference between both?
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