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Math Help - chemisty work

  1. #1
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    chemisty work

    1. Write a formula for the compound that forms from each pair.

    a) Aluminum and sulfur


    Aluminum = Al3+ Sulfur= S2-
    =Al2S3

    b) Beryllium and iodine
    Beryllium = Be2+ Iodine= I-
    =BeI2
    c) Calcium and phosphate

    Calcium= Ca2 ???????????

    d) Sodium and Oxalate.

    I am having a hard time figuring out how to get phosphate and oxalate because they are not on the chart
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  2. #2
    Kyo
    Kyo is offline
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    Re: chemisty work

    Phosphate is PO(4) (3-) charge, and Oxalate is C(2)O(4) (2-). I assume you mean they are not on the periodic table - this is true because they are not elements, but are polyatomic ions.
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