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(NH 4 ) 2 CO 3. Step 2 : –ide = binary compound. PROBLEM: Give the formula for each of the following ionic compounds: (a) ammonium carbonate (b) calcium iodide (c) copper(II) bromide (d) aluminum phosphate (e) silver(I) acetate. Ca I 2.
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(NH4)2CO3 Step 2: –ide = binary compound PROBLEM:Give the formula for each of the following ionic compounds:(a) ammonium carbonate (b) calcium iodide(c) copper(II) bromide (d) aluminum phosphate(e) silver(I) acetate CaI2 Step 3: Roman numeral (II) = +2 charge –ide = binary compound CuBr2 Step 4: Aluminum has a +3 charge AlPO4 Step 5: Note: Silver is only ever +1 so the roman numeral (I) is not needed Step 1: ammonium = NH41+carbonate = CO32– AgC2H3O2