CHM 2045C Sample Exam Name: ____________________

Module Four: Part E Polyatomic Ions 4 points

Using a periodic chart write the names or formulas of the following polyatomic ions depending on whether the formula or name is given:

1. CO₃^2- _____________________

2. SO₃^2- _____________________

3. PO₃^3- _____________________

4. ClO₃^1- _____________________

5. NO₃^1- _____________________

6. Hydroxide ion ________

7. Ammonium ion ________

8. Hypochlorite ion ________

9. Nitrite ion ________

10. Phosphate ion ________

Bonus write formula, name, and charge for any polyatomic ion not above: