Report - Writing & Naming Formulas of Ionic & Covalent Compounds...Writing Ternary Formulas NO 3 Ca+2 -1 Cation Anion Compound 3 Ca(NO ) 2 Mg+2 PO 4-3 Ba+2 Mg ( ) 3 PO 4 2 OH-1 Ba+2 SO 4-2

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