Magnesium forms the compounds Mg(NO3)2, MgCl2, MgSO4, and Mg3(PO4)2. What are the formulas for barium nitrate, barium chloride, barium sulfate, and barium phosphate? Knowing that aluminum forms a 3+ charge, what would you predict are the formulas for aluminum nitrate, aluminum chloride, aluminum sulfate, and aluminum phosphate? barium nitrate

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