Worksheet ___ - Naming Ionic
Compounds
Part 1
(Binary compounds with Group 1, 2 or 13 metals)
Binary compounds: have only two kinds of elements, if there are three or more it is
not a binary compound.
Naming
1. Metal goes first and you get the name directly from the periodic table.
2. Non-metal goes second. The ending changes to “ide”
Name of element
Name at end of
compound
Name of
element
Name at end of
compound
Fluorine
Chlorine
Bromine
Iodine
Fluoride
Chloride
Bromide
Iodide
Oxygen
Sulfur
Nitrogen
Phosphorus
Oxide
Sulfide
Nitride
Phosphide
Write the chemical formula for each of the following.
1. lithium chloride
2. beryllium chloride
3. sodium oxide
4. potassium sulfide
5. magnesium phosphide
6. aluminum fluoride
7. calcium nitride
8. magnesium oxide
9. beryllium nitride
10. potassium carbide
11. potassium nitride
12. potassium fluoride
13. aluminum nitride
14. sodium fluoride
15. calcium carbide
16. barium bromide
17. francium phosphide
18. gallium sulfide
Write the chemical names of the following compounds.
1. LiF
2. Li2O
3. AlP
4. NaCl
5. K2S
6. Ca3N2
7. MgO
8. BeS
9. Ca2C
10. Li4C
11. AlF3
12. KBr
13. Ga2O3
14. CsI
15. SrAt2
16. Rb3P
17. BaS
18. Al4C3
Worksheet ____ - Naming Ionic
Compounds
Part 2
(Binary compounds with Group 3 - 12 metals)
Naming
(STOCK SYSTEM)
1. Metal goes first and you get the name directly from the periodic table.
2. Immediately after the metal in brackets write the charge of the metal ion
in roman numerals.
3. Non-metal goes second. The ending changes to “ide”
The metals in Groups 3 – 12 can have more then one charge on the ion
(polyvalent ions) so when you name them you have to add in the charge of the metal ion
by using roman numerals. This method of naming is called the stock system and is used
only for the polyvalent ions. There is another method of naming the polyvalent ions,
which we will look at in part 3 of naming ionic compounds.
Element
Antimony
Arsenic
Cobalt
Copper
Gold
Iron
Cations
Sb3+
Sb5+
As3+
As5+
Co2+
Co3+
Cu+
Cu2+
Au+
Au3+
Fe2+
Fe3+
Example
Name of Cation
Antimony (III)
Antimony (V)
Arsenic (III)
Arsenic (V)
Cobalt (II)
Cobalt (III)
Copper (I)
Copper (II)
Gold (I)
Gold (III)
Iron (II)
Iron (III)
Element
Lead
Manganese
Mercury
Nickel
Tin
Titanium
Cations
Pb2+
Pb4+
Mn2+
Mn4+
Hg+
Hg2+
Ni2+
Ni3+
Sn2+
Sn4+
Ti3+
Ti4+
copper chloride
CuCl
copper (I) chloride
CuCl2
or
copper (II) chloride
Both are copper chloride
Need the charge on copper
Write the names of the following compounds.
1. CuO
Name of Cation
Lead (II)
Lead (IV)
Manganese (II)
Manganese (IV)
Mercury (I)
Mercury (II)
Nickel (II)
Nickel (III)
Tin (II)
Tin (IV)
Titanium (III)
Titanium (IV)
2. Cu2O
3. Sb2O5
4. Sb2O3
5. PbCl4
6. NiBr2
7. AuP
8. Au3P
9. FeO
10. Sn3P4
11. Fe2C
12. Co4C3
13. Hg3N
14. MnS2
15. AsI5
16. SnO
17. Ti2S3
18. TiF4
Write the chemical formulas of the following
1. manganese (IV) oxide
2. arsenic (V) sulfide
3. cobalt (II) chloride
4. antimony (III) bromide
5. iron (II) carbide
6. gold (I) iodide
7. mercury (II) nitride
8. cobalt (III) phosphide
9. nickel (III) oxide
10. titanium (IV) carbide
11. antimony (V) oxide
12. tin (II) fluoride
13. lead (IV) nitride
14. arsenic (V) bromide
15. gold (II) sulfide
16. antimony (V) phosphide 17. copper (I) oxide
18. gold (I) carbide
Worksheet ____- Naming Ionic
Compounds
Part 3
(Binary compounds with Group 3 - 12 metals)
Naming
(CLASSICAL SYSTEM)
1. Metal goes first. Some metals use special names. For all of the metals
the ending changes to “ous” or “ic” (“ous” is for the lower ion of the
metal, while “ic” is for the higher ion of the metal)
2. Non-metal goes second. The ending changes to “ide”
Element
Antimony
Arsenic
Cobalt
Copper
Gold
Iron
Example
Cations
Sb3+
Sb5+
As3+
As5+
Co2+
Co3+
Cu+
Cu2+
Au+
Au3+
Fe2+
Fe3+
Name of Cation
Antimonous
Antimonic
Arsenous
Arsenic
Cobaltous
Cobaltic
Cuprous
Cupric
Aurous
Auric
Ferrous
Ferric
Element
Lead
Manganese
Mercury
Nickel
Tin
Titanium
Cations
Pb2+
Pb4+
Mn2+
Mn4+
Hg+
Hg2+
Ni2+
Ni3+
Sn2+
Sn4+
Ti3+
Ti4+
Name of Cation
Plumbous
Plumbic
Manganous
Manganic
Mercurous
Mercuric
Nickelous
Nickelic
Stannous
Stannic
Titaniumous
Titaniumic
copper chloride
CuCl (Cu+) or
cuprous chloride
CuCl2 (Cu2+)
cupric chloride
Both are copper chloride
Must indicate the charge
with “ous” or “ic”
Write the names of the following compounds.
1. CuO
2. Cu2O
3. Sb2O5
4. Sb2O3
5. PbCl4
6. NiBr2
7. AuP
8. Au3P
9. FeO
10. Sn3P4
11. Fe2C
12. Co4C3
13. Hg3N
14. MnS2
15. AsI5
16. SnO
17. Ti2S3
18. TiF4
Write the chemical formulas of the following
1. manganic oxide
2. arsenic sulfide
3. cobaltous chloride
4. antimonous bromide
5. ferrous carbide
6. aurous iodide
7. mercuric nitride
8. cobaltic phosphide
9. nickelic oxide
10. titaniumic carbide
11. antimonic oxide
12. stannous fluoride
13. plumbic nitride
14. arsenic bromide
15. auric sulfide
16. antimonic phosphide
17. cuprous oxide
18. aurous carbide
Worksheet ____ - Naming Ionic
Compounds
Part 4
(For compounds that are not binary)
There are groups of non-metals that like to stay together and have a total charge these are
called polyatomic ions.
Naming
1. Metal goes first and all previous rules for the metals apply.
1a) Group 1, 2, 13 metals name directly from periodic table
1b) Group 3 – 12 metals STOCK SYSTEM name from periodic table
plus identify the charge using roman numerals
1c) Group 3 – 12 metals CLASSICAL SYSTEM “ous” identifies
lower ion and “ic” identifies higher ion
2. Negative polyatomic ion second and you get the name from the table below.
Polyatomic ions
Name of
polyatomic ion
Nitrite
Nitrate
Sulfite
Sulfate
Chlorite
Chlorate
Arsenite
Arsenate
Ion formula
NO2NO3SO32SO42ClO2ClO3AsO33AsO43-
Name of
polyatomic ion
Hydrogen Carbonate
(Bicarbonate)
Carbonate
Phosphate
Acetate
Cyanide
Hydroxide
Ammonium
Name the following compounds
1. LiNO3
2. Be(HCO3)2
3. AlPO4
4. CaCO3
5. NaNO2
6. Ga(OH)3
7. Cu2SO4
8. Cu(NO3)2
9. Mg3(PO4)2
Ion formula
HCO3CO32PO43C2H3O2CNOHNH4+
10. Sn(OH)4
11. Ba3(AsO4)2
12. (NH4)2CO3
13. Sb(C2H3O2)5
14. KCN
15. Al2(SO3)3
16. FrClO3
17. SrCO3
18. Li3(PO4)
Write the chemical formula for the following compounds
1. lithium chlorite
2. beryllium nitrate
3. calcium phosphate
4. aluminum phosphate
5. manganese (IV) hydroxide 6. ammonium sulfate
7. sodium acetate
8. nickel (II) arsenite
9. ferric cyanide
10. cobaltous sulfite
11. auric bicarbonate
12. ammonium phosphate
13. potassium acetate
14. cesium nitrate
15. magnesium arsenite
16. tin (IV) hydroxide
17. antimony (V) arsenate
18. gallium chlorate