Name_____________________                                            Date_______________

Homework science III

 Polyatomic Ions in Ionic Compounds:

What is the Rule for using Polyatomic Ions in Ionic compounds-

_____________________________________________________________________________________________________________

What does the Prefix Poly- mean?____________________

 Common Polyatomic Ions:

Nitrite NO21-

Nitrate NO31-

Sulfite SO32-

Sulfate SO32-

Carbonate CO32-

Phosphite PO33-

Phosphate PO43-

Hydroxide OH1-

Practice: Write the formulas for the following Ionic compounds containing Polyatomic Ions

 

Ex.  Barium Nitrite    Ba2+ NO21- crisscross,   answer=     Ba (NO2) 2

 

  1. Calcium Carbonate__________________
  2. Lithium Hydoxide___________________
  3. Barium Sulfate______________________
  4. Sodium Sulfite____________________
  5. Magnesium Nitrite___________________
  6. Strontium phosphate__________________
  7. Beryllium Nitrate__________________
  8. Potassium Phosphite__________________
  9. Calcium Hydroxide __________________
  10. Aluminum Nitrate __________________

 Write the name of the following ionic compounds that contain polyatomic ions.

  1. Mg (NO3) 2 ______________________________
  2. Na2 SO3  ________________________________
  3. Al2 (CO3 ) 3________________________________
  4. Sr (OH) 2  ________________________________
  5.  Al PO4________________________________