5 polyatomic ion compounds

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5 polyatomic ion compounds

  1. 1. Polyatomic Ion Compounds
  2. 2. <ul><li>Polyatomic Ions- positively or negatively charged covalently bonded group of atoms. </li></ul><ul><li>The compound has 3 or more elements. </li></ul>
  3. 3. <ul><li>Polyatomic Ion Chart </li></ul><ul><li>Name Formula </li></ul><ul><li>+1 Ammonium NH 4 +1 </li></ul><ul><li>-1 Acetate C 2 H 3 O 2 -1 </li></ul><ul><li>Chlorate ClO 3 -1 </li></ul><ul><li>Hydroxide OH -1 </li></ul><ul><li>Nitrate NO 3 -1 </li></ul>
  4. 4. <ul><li>Name Formula </li></ul><ul><li>-2 Carbonate CO 3 -2 </li></ul><ul><li>Sulfate SO 4 -2 </li></ul><ul><li>-3 Phosphate PO 4 -3 </li></ul>
  5. 5. <ul><li>Steps in Writing Formulas with Polyatomic Ions </li></ul><ul><li>Write the symbol of the element/polyatomic ion that has a positive charge. </li></ul><ul><li>Write the symbol of the element/ polyatomic ion that has a negative charge. </li></ul>
  6. 6. <ul><li>Write in subscripts so that the sum of the oxidation numbers equal zero. Enclosed with parenthesis (if needed). </li></ul>
  7. 7. <ul><li>Ex: Calcium Nitrate </li></ul><ul><li>Ca +2 NO 3 -1 = Ca +2 (NO 3 -1 ) 2 </li></ul>
  8. 8. Write the following formulas <ul><li>Sodium sulfate </li></ul><ul><li>Magnesium chlorate </li></ul><ul><li>Lithium acetate </li></ul><ul><li>Barium carbonate </li></ul><ul><li>Ammonium acetate </li></ul><ul><li>Ammonium carbonate </li></ul>
  9. 9. <ul><li>Steps in Naming Compounds </li></ul><ul><li>with Polyatomic Ion </li></ul><ul><li>Write the name of the positive element. </li></ul><ul><li>-If it’s an ammonium ion, write it first. </li></ul><ul><li>2. Use the polyatomic ion chart to find the name. </li></ul>
  10. 10. <ul><li>Ex: </li></ul><ul><li>K 2 SO 4 = Potassium Sulfate </li></ul>
  11. 11. Name the following compounds <ul><li>Sr(OH) 2 </li></ul><ul><li>C(NO 3 ) 4 </li></ul><ul><li>BeCO 3 </li></ul><ul><li>BPO 4 </li></ul><ul><li>HC 2 H 3 O 2 </li></ul>

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