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Naming Ternary Ionic Compounds

Naming Ternary Ionic Compounds. Objectives. Name ternary compounds given their formulae Given the name, write the formula of an ionic compound Define, name, and recognize polyatomic ions. Ternary Ionic Compounds. A ternary compound contains atoms of three different elements

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Naming Ternary Ionic Compounds

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  1. Naming Ternary Ionic Compounds

  2. Objectives • Name ternary compounds given their formulae • Given the name, write the formula of an ionic compound • Define, name, and recognize polyatomic ions

  3. Ternary Ionic Compounds • A ternary compound contains atoms of three different elements • Usually ternary compounds contain a polyatomic ion • Polyatomic Ions are tightly bound groups of atoms that behave as a unit and carry a charge • Example: SO42-, NO3-, PO43-

  4. Common Polyatomic Ions

  5. Naming Ternary Compounds • When naming polyatomic ions, remember that an -ateor-iteending indicates that the compound contains oxygen • Write the name of the metal ion • Write the name of the polyatomic ion using the naming chart

  6. Name the Following: • LiCN • Lithium cyanide • K2SO3 • Potassium sulfite • Fe2(CO3)3 • Iron (III) carbonate • NH4Cl • Ammonium Chloride

  7. Formulas for Ternary Compounds • Write the symbol and charge of the metal • Write the symbol and charge for the polyatomic ion • When more than one polyatomic ion is needed to balance the charges, parentheses are placed around the entire polyatomic ion with a subscript outside • Never use parentheses when there is only a single polyatomic ion • Balance the charges using the criss cross method

  8. Write the Formula: • Sodium phosphate • Na3PO4 • Aluminum hydroxide • Al(OH)3 • Ammonium chloride • NH4Cl • Chromium (III) nitrite • Cr(NO2)3

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