To name ionic compounds, the name of the metal is written followed by the nonmetal with the suffix -ide. For transition metals, the oxidation state of the metal ion is indicated in Roman numerals in parentheses. To name compounds containing polyatomic ions, the name of the metal is written followed by the name of the polyatomic ion. For covalent compounds, the least electronegative element is named first along with a prefix to indicate the number of atoms, then the most electronegative element followed by a suffix of -ide and a prefix to indicate its number of atoms.

1. Naming Compounds

2. Naming Compounds: Ionic Bonds
To write the name of an ionic compound, you write the
name of the metal then the name of the nonmetal with
the suffix -ide.

3. Naming Compounds: Ionic Bonds
At Astatine
Br Bromine
C Carbon
F Fluorine
I Iodine
N Nitrogen
O Oxygen
P Phosphorus
Se Selenium
S Sulfure

4. Naming Compounds: Ionic Bonds
(transitional metals)
To write the name of an ionic compound, you write the name of the metal then the name of the
nonmetal with the suffix -ide.
( Remember, transitional metals can form multiple
types of ions; they have different oxidation states.
When you name a compound that has a transitional
)
metal, you indicate which ion is involved.
If the compound has a transition metal, indicate its oxidation state (charge of ion) with a Roman
Numeral in parenthesis before the nonmetal.
Copper (I) Oxide
Copper (II) Oxide

5. Naming Compounds: Ionic Bonds
(transitional metals)
At Astatine
Br Bromine
C Carbon
F Fluorine
I Iodine
N Nitrogen
O Oxygen
P Phosphorus
Se Selenium
S Sulfure

6. Naming Compounds: Ionic Bonds
(Polyatomic Ions)
1. Name the metal, name the
polyatomic ion.
1. Potassium Nitrate
2. Name the transitional metal,
indicate oxidation state, name the
polyatomic ion.
1. Copper (II) Nitrate

7. Naming Compounds: Ionic Bonds
(Polyatomic Ions)

8. Naming Compounds: Covalent Bonds
1. Name the least
electronegative nonmetal
a. indicate the number of
atoms of said element
with the correct prefix
2. Name the most
electronegative nonmetal
a. indicate the number of
atoms of said element
with the correct prefix
b. add suffix -ide

9. Naming Compounds: Covalent Bonds
At Astatine
Br Bromine
C Carbon
F Florine
I Iodine
N Nitrogen
O Oxygen
P Phosphorus
Se Selenium
S Sulfure

10. Naming Compounds: Covalent Bonds
At Astatine
Br Bromine
C Carbon
F Florine
I Iodine
N Nitrogen
O Oxygen
P Phosphorus
Se Selenium
S Sulfure