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Write formulas for the compounds that form from In and each of the following polyatomic ion: NO−3, SO2−4, PO3−4.

(Assume In charge is 3+.)

InNo9, InSO6, AND InP4 is wrong

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3 answers
  1. NO-3 ? , SO2-4 ?, PO3 -4

    Where did you get these strange charges for the ions?
    eg PO3 normally -3

    ASSUMING your strange valences:
    In +3
    NO -3
    then to be neutral
    InNO

    In+3 * 4 = +12
    SO2-4 * 3 = -12
    so
    In4(SO2)3

    similarly
    In4 (PO3)4

    But I suspect you have the original statement messed up

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  2. I'm sure you mean [NO3]^-, [SO4]^2- etc.
    Then In(NO3)3, In2(SO4)3, etc.
    If we could write subscripts very well on this forum the nitrate would be [NO3]-

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  3. there copied straight from the question page, this is making sense

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