17777 Write the correct chemical formulae for the ionic compound using the name of the compound. Metal (cation) first, Nonmetal (anion) second. • Use subscripts to the right of the chemical symbol for an element if there is more than one present in the molecule. . All molecules must be neutral: Positives - Negatives • Use the roman numerals to indicate charge on the polyvalent metal atoms. Chemical Formula 25 27 Compound Name 26 Calcium sulfate 29 40 Calcium hydroxide 28 Sodium thiocyanate Sodium phosphate 30 Aluminum phosphate 31 Magnesium hydrogen carbonate 32 Magnesium nitrate 33 Iron (II) perchlorate 34 Iron (III) hydrogen carbonate 35 Copper (I) sulfate 36 Ammonium acetate 37 Ammonium phosphide Sodium nitrate 38 Ammonium selenide 39 Disodium potassium phosphate Potassium hydrogen sulfate

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