1. Polyatomic Ions
What is a cation afraid of?
Answer:
A dogion…

2. Many ionic compounds are not binary because one or both ions contain atoms of more than one element. These polyatomic ions consist of two or more different non-metal atoms, which are joined by covalent bonds. There is only one common polyatomic cation: the ammonium ion, NH4+. There are many polyatomic anions. Except for the hydroxide ion, the names of the

3. Common polyatomic ions.
anions end in
“-ate”
instead of “ide”. Writing formulas is also the same, except that you have to add parentheses when the formula requires more than one polyatomic ion.
Common polyatomic ions.

4. ammonium hydroxide carbonate nitrate sulfate hydrogen carbonate
Name (ion)
Chemical Formula
ammonium
hydroxide
carbonate
nitrate
sulfate
hydrogen carbonate
hydrogen sulfate
phosphate

5. ammonium NH4+ hydroxide carbonate nitrate sulfate hydrogen carbonate
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
carbonate
nitrate
sulfate
hydrogen carbonate
hydrogen sulfate
phosphate

6. ammonium NH4+ hydroxide OH- carbonate nitrate sulfate
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
nitrate
sulfate
hydrogen carbonate
hydrogen sulfate
phosphate

7. ammonium NH4+ hydroxide OH- carbonate CO32- nitrate sulfate
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
CO32-
nitrate
sulfate
hydrogen carbonate
hydrogen sulfate
phosphate

8. ammonium NH4+ hydroxide OH- carbonate CO32- nitrate NO3- sulfate
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
CO32-
nitrate
NO3-
sulfate
hydrogen carbonate
hydrogen sulfate
phosphate

9. ammonium NH4+ hydroxide OH- carbonate CO32- nitrate NO3- sulfate SO42-
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
CO32-
nitrate
NO3-
sulfate
SO42-
hydrogen carbonate
hydrogen sulfate
phosphate

10. ammonium NH4+ hydroxide OH- carbonate CO32- nitrate NO3- sulfate SO42-
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
CO32-
nitrate
NO3-
sulfate
SO42-
hydrogen carbonate
HCO3-
hydrogen sulfate
phosphate

11. ammonium NH4+ hydroxide OH- carbonate CO32- nitrate NO3- sulfate SO42-
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
CO32-
nitrate
NO3-
sulfate
SO42-
hydrogen carbonate
HCO3-
hydrogen sulfate
HSO4-
phosphate

12. ammonium NH4+ hydroxide OH- carbonate CO32- nitrate NO3- sulfate SO42-
Name (ion)
Chemical Formula
ammonium
NH4+
hydroxide
OH-
carbonate
CO32-
nitrate
NO3-
sulfate
SO42-
hydrogen carbonate
HCO3-
hydrogen sulfate
HSO4-
phosphate
PO43-

13. Write the formulas of the following:
ammonium sulfide
CuCO3

14. Write the formulas of the following:
ammonium sulfide
NH4+ S2-
CuCO3

15. Write the formulas of the following:
ammonium sulfide
NH4+ S2-
(NH4)2S
CuCO3

16. Write the formulas of the following:
ammonium sulfide
NH4+ S2-
(NH4)2S
Cu+ CO3-
Cu2+ CO32-
CuCO3

17. Write the formulas of the following:
ammonium sulfide
NH4+ S2-
(NH4)2S
copper(II) carbonate
Cu+ CO3-
Cu2+ CO32-
CuCO3

18. Write the formulas of the following:
ammonium sulfide
NH4+ S2-
(NH4)2S
copper(II) carbonate or
Cu+ CO3-
Cu2+ CO32-
CuCO3

19. Write the formulas of the following:
ammonium sulfide
NH4+ S2-
(NH4)2S
copper(II) carbonate or
cupric carbonate
Cu+ CO3-
Cu2+ CO32-
CuCO3

22. The End 