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Help with Identifying the group in ionic compund formulas

  1. Dec 3, 2008 #1
    1. The problem statement, all variables and given/known data


    Identify the group to which X belongs in each ionic compound formula. Enter your response using the group number.

    a) MgX
    b)XCl2
    c) XF2

    2. Relevant equations



    3. The attempt at a solution

    The first one I figured out was group 16. However, the next two I thought were group 1, but I keep getting the wrong answer. Help anyone???
     
  2. jcsd
  3. Dec 3, 2008 #2

    Borek

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    Staff: Mentor

    What must be X valence?
     
  4. Dec 4, 2008 #3

    chemisttree

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    Science Advisor
    Homework Helper
    Gold Member

    Its gotta balance two negative charges so......
     
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