1. The polyatomic Ions There are 3 with a -2 charge SO 4 2– …..Sulfate SO 3 2– …...Sulfite CO 3 2– ……Carbonate

2. SO 4 2– Sulfate

3. SO 3 2– Sulfite

4. CO 3 2– Carbonate

5. There is only 1 with a +1 charge NH 4 1+ ……. Ammonium

6. NH 4 1+ Ammonium

7. There are several with a -1 charge ClO 4 1– …perchlorate ClO 3 1– …chlorate ClO 2 1– …chlorite ClO 1– …hypochlorite Do you see a pattern?

8. One of these is nitrite the other is nitrate NO 3 1–………………. NO 2 1–……………….

9. More -1 charges HCO 3 1– …Bicarbonate HSO 4 1– …Bisulfate HSO 3 1– …Bisulfite Do you see a pattern?

10. More -1 ions OH 1–……..…Hydroxide CH 3 COO 1–…………. acetate (also C 2 H 3 O 2 -1 ) MnO 4 1–……….permanganate

11. And there is only one -3 ion PO 4 3–……………….phosphate

12. Practice NO 3 1–………………. NO 2 1–……………….

13. practice OH 1–………………. MnO 4 1–……………….

14. Practice SO 4 2–………………. CH 3 COO 1–……………….

15. Practice PO 4 3–………………. NH 4 1+……………….

16. Practice HCO 3 1– … HSO 4 1– … HSO 3 1– …

17. Practice ClO 4 1– … ClO 3 1– … ClO 2 1– … ClO 1– …