1. Naming Ternary Ionic Compounds
 (Naming Compounds Containing Polyatomic Ions)
Ternary Ionic Compounds
~ contain atoms of three or more different
elements
~ usually contain one or more polyatomic
ions
Ternary ionic compounds are named by writing
the name of the cation followed by the name of
the anion (usually a polyatomic ion, which keeps
its group name)

2. Know these polyatomic groups:
Carbonate (CO3)2-
Nitrate (NO3)1-
Phosphate (PO4)3-
Sulfate (SO4)2-
Hydroxide (OH)1-
Ammonium (NH4)+

3. Practice
Name the compounds:
NaNO3
Ca3(PO4)2
KOH
Li2CO3
Na2SO4

4. Practice Name the compounds: NaNO3 Ca3(PO4)2 KOH Li2CO3 Na2SO4 sodium
NaNO3
Ca3(PO4)2
KOH
Li2CO3
Na2SO4
sodium
nitrate
calcium
phosphate
potassium
hydroxide
lithium
carbonate
sodium
sulfate

5. Practice
Name these compounds :
Cu2CO3
Fe(NO3)3
Sn(OH)2
CrPO4

6. chromium (III) phosphate
Practice
Name these compounds :
Cu2CO3
Fe(NO3)3
Sn(OH)2
CrPO4 1+ 2-
copper (I) carbonate 3+ 1-
iron (III) nitrate 2+ 1-
tin (II) hydroxide 3+ 3-
chromium (III) phosphate

7. Practice Write formulas for: lead(II) nitrate potassium phosphate
Write formulas for:
lead(II) nitrate
potassium phosphate
mercury(II) sulfate
ammonium hydroxide

8. Practice Write formulas for: lead(II) nitrate potassium phosphate
Write formulas for:
lead(II) nitrate
potassium phosphate
mercury(II) sulfate
ammonium hydroxide
Pb2+
(NO3)1-
Pb(NO3)2
K1+
(PO4)3-
K3(PO4)
Hg2+
(SO4)2-
HgSO4
(NH4)1+
(OH)1-
NH4OH