1. Naming Ternary Compounds
Nomenclature
Naming Ternary Compounds

2. Naming Ternary Compounds Reference Point
Contain at least 3 elements
Reference point begins with compounds that contain H, O, and a third non-metal
These compounds are called acids

3. Naming Ternary Compounds Reference Point
Acids are compounds formed from nonmetal elements only
Examples
HClO3
HNO3
H2SO4

4. Naming Ternary Compounds Reference Point
-ic ending
Reference
Nonmetal- use stem of
chlorine
Chloric acid
Acid = H
HClO3

5. Naming Ternary Compounds Reference Point
-ic ending
Use a prefix- per
perchloric acid
Acid = H
HClO4

6. Naming Ternary Compounds Reference Point
-ous ending
chlorous acid
Acid = H
HClO2

7. Naming Ternary Compounds Reference Point
Use a prefix- hypo
-ous ending
hypochlorous acid
Acid = H
HClO

8. Naming Ternary Compounds Reference Point
Name these acids
(a) HBrO4
(b) HBrO3
(c) HBrO2
(d) HBrO

9. Naming Ternary Compounds Solutions
Name these acids
(a) perbromic acid
(b) bromic acid
(c) bromous acid
(d) hypobromous acid

10. Naming Ternary Compounds Periodic Table Reference Point18 13 14 15 16 17
 He
3 H & 3 O
2 H & 3 O
1 H & 3 O O F
Noble Gases
3 H & 4 O
2 H & 4 O

11. Naming Ternary Compounds
Naming salts of polyatomic ions
Name the metal followed by the name of the polyatomic ion
Salts do not contain the hydrogen from the acid; drop the word acid from the name
If the acid name ended in –ic, change it to –ate
If the acid name ended in –ous, change it to -ite

12. Naming Ternary Compounds
Examples:
NaNO3 Sodium nitrate
K2SO4 Potassium sulfate
Al(HCO3)3 Aluminum bicarbonate
or aluminum hydrogen
carbonate

13. Polyatomic Ions A group of atoms with an overall charge.
NH4+ ammonium OH- hydroxide
NO3- nitrate NO2- nitrite
CO32- ______________
HCO hydrogen carbonate (bicarbonate)

14. Polyatomic Compounds Match each set with the correct name:
A Na2CO3 1) magnesium sulfite
MgSO3 2) magnesium sulfate
MgSO4 3) sodium carbonate
B. Ca(HCO3)2 1) calcium carbonate
CaCO3 2) calcium phosphate
Ca3(PO4)2 3) calcium bicarbonate

15. Solution A. Na2CO3 3) sodium carbonate MgSO3 1) magnesium sulfite
MgSO4 2) magnesium sulfate
B. Ca(HCO3)2 3) calcium bicarbonate
CaCO3 1) calcium carbonate
Ca3(PO4)2 2) calcium phosphate

16. Polyatomic Compounds A. aluminum nitrate
1) AlNO ) Al(NO)3 3) Al(NO3)3
B. copper(II) nitrate
1) CuNO3 2) Cu(NO3)2 3) Cu2(NO3)
C. Iron (III) hydroxide
1) FeOH 2) Fe3OH 3) Fe(OH)3
D. Tin(IV) hydroxide
1) Sn(OH)4 2) Sn(OH) ) Sn4(OH)

17. Solution A. aluminum nitrate 3) Al(NO3)3 B. copper(II) nitrate
2) Cu(NO3)2
C. Iron (III) hydroxide
3) Fe(OH)3
D. Tin(IV) hydroxide
1) Sn(OH)4