Polyatomic Ions

Sometimes groups of bonded atoms act like a single ion when bonding with other atoms. These are called polyatomic ions. Use the table below to answer the following questions.

Polyatomic Ions
Name	Formula
Ammonium	NH₄¹⁺
Acetate	C₂H₃O₂^1-
Chlorate	ClO₃^1-
Hydrogen carbonate	HCO₃^1-
Hydroxide	OH^1-
Nitrate	NO₃^1-
Nitrite	NO₂^1-
Carbonate	CO₃^2-
Sulfate	SO₄^2-
Sulfite	SO₃^2-
Phosphate	PO₄^3-

1) What is the name of NaNO₃?

2) What is the name of CaSO₃?

3) What is the name of Ca(OH)₂?

4) Predict the formula for lithium carbonate.

5) Predict the formula for cesium acetate.

6) Predict the formula for ammonium sulfate.

7) Predict the formula for potassium hydroxide.

8) Predict the formula for magnesium phosphate.

9) Predict the formula for magnesium acetate.

10) Predict the formula for ammonium chloride.

11) Predict the formula for barium chlorate.

12) Predict the formula for sodium hydrogen carbonate.

13) Predict the formula for ammonium phosphate.