Chapter #5
Nomenclature
NOMENCLATURE
I. Binary Ionic compounds
Binary means two different elements
Ionic means metal and nonmetal
Step 1
First give the name of the metal, followed by the
nonmetal name using the “ide” suffix.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to to
describe the charge of the metal. Except Ag,
Zn,and Al
Examples
NaCl
Al2O3
FeCl2
FeCl3
NOMENCLATURE
I. Binary Ionic compounds
Binary means two different elements
Ionic means metal and nonmetal
Step 1
First give the name of the metal, followed by the
nonmetal name using the “ide” suffix.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to to
describe the charge of the metal. Except Ag,
Zn,and Al
Examples
NaCl Sodium chloride
Al2O3
FeCl2
FeCl3
NOMENCLATURE
I. Binary Ionic compounds
Binary means two different elements
Ionic means metal and nonmetal
Step 1
First give the name of the metal, followed by the
nonmetal name using the “ide” suffix.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to to
describe the charge of the metal. Except Ag,
Zn,and Al
Examples
NaCl Sodium chloride
Al2O3 Aluminum oxide
FeCl2
FeCl3
NOMENCLATURE
I. Binary Ionic compounds
Binary means two different elements
Ionic means metal and nonmetal
Step 1
First give the name of the metal, followed by the
nonmetal name using the “ide” suffix.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to to
describe the charge of the metal. Except Ag,
Zn,and Al
Examples
NaCl Sodium chloride
Al2O3 Aluminum oxide
FeCl2 Iron(II) chloride
FeCl3
NOMENCLATURE
I. Binary Ionic compounds
Binary means two different elements
Ionic means metal and nonmetal
Step 1
First give the name of the metal, followed by the
nonmetal name using the “ide” suffix.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to to
describe the charge of the metal. Except Ag,
Zn,and Al
Examples
NaCl Sodium chloride
Al2O3 Aluminum oxide
FeCl2 Iron(II) chloride
FeCl3 iron(III) chloride
II. Nonbinary Ionic compounds
Nonbinary means more than two different elements
Step 1
First give the name of the metal, followed by the
memorized polyatomic ion name.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to describe
the charge of the metal. Except Ag, Zn, and Al.
Examples
NaOH
FeSO4
Fe(NO3)3
Zn(C2H3O2)2
Memorized Polyatomic Ion List
Formula
Name
Formula
Name
NH4+
C2H3O2CO32-
Ammonium
Acetate
Carbonate
O22NO3NO2-
Peroxide
Nitrate
Nitrite
HCO31-
SO42-
Sulfate
ClO4-
Hydorgen
carbonate
Perchlorate
SO32-
Sulfite
ClO3ClO2-
Chlorate
Chlorite
PO43PO33-
Phosphate
Phosphite
ClOCNOH-
Hypochlorite
Cyanide
Hydroxide
CrO42Cr2O72-
Chromate
Dichromate
II. Nonbinary Ionic compounds
Nonbinary means more than two different elements
Step 1
First give the name of the metal, followed by the
memorized polyatomic ion name.
Step 2
CO
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to describe
the charge of the metal. Except Ag, Zn, and Al.
Examples
NaOH
FeSO4
Sodium hydroxide
Fe(NO3)3
Zn(C2H3O2)2
II. Nonbinary Ionic compounds
Nonbinary means more than two different elements
Step 1
First give the name of the metal, followed by the
memorized polyatomic ion name.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to describe
the charge of the metal. Except Ag, Zn, and Al.
Examples
NaOH
Sodium hydroxide
Fe(SO4)2
Fe(NO3)3
Iron(III) nitrate
Zn(C2H3O2)2
II. Nonbinary Ionic compounds
Nonbinary means more than two different elements
Step 1
First give the name of the metal, followed by the
memorized polyatomic ion name.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to describe
the charge of the metal. Except Ag, Zn, and Al.
Examples
NaOH
Sodium hydroxide
Fe(SO4)2
Iron(II) sulfate
Fe(NO3)3
Iron(III) nitrate
Zn(C2H3O2)2
II. Nonbinary Ionic compounds
Nonbinary means more than two different elements
Step 1
First give the name of the metal, followed by the
memorized polyatomic ion name.
Step 2
If the metal is to the right of group IIA, then a
Roman numeral is used after the metal to describe
the charge of the metal. Except Ag, Zn, and Al.
Examples
NaOH
Sodium hydroxide
Fe(SO4)2
Iron(II) sulfate
Fe(NO3)3
Iron(III) nitrate
Zn(C2H3O2)2
Zinc acetate
III. Binary molecular Compounds
Molecular means nonmetals
Step 1
First give the name of the first nonmetal,
followed by the nonmetal name using the “ide”
suffix.
Step 2
Give each nonmetal a Latin prefix describing
the number of atoms present in the compound.
Examples
CO
P2O5
CO2
CCl4
You will need to learn the Greek numerical prefixes (Table 4.6):
Number
1
2
3
4
Prefix
Mono-*
DiTriTetra-
5
6
7
8
PentaHexaHeptaOcta-
9
Nona-
10
Deca-
*Note 1
Compound
names never
start with mono
Note 2
When adding
a prefix two
vowls cannot
next to each
other
III. Binary Molecular Compounds
Molecular means nonmetals
Step 1
First give the name of the first nonmetal,
followed by the nonmetal name using the “ide”
suffix.
Step 2
Give each nonmetal a Latin prefix describing
the number of atoms present in the compound.
Examples
CO Carbon monoxide
P2O5
CO2
CCl4
III. Binary Molecular Compounds
Molecular means nonmetals
Step 1
First give the name of the first nonmetal,
followed by the nonmetal name using the “ide”
suffix.
Step 2
Give each nonmetal a Latin prefix describing
the number of atoms present in the compound.
Examples
CO Carbon monoxide
P2O5
CO2 Carbon dioxide
CCl4
III. Binary Molecular Compounds
Molecular means nonmetals
Step 1
First give the name of the first nonmetal,
followed by the nonmetal name using the “ide”
suffix.
Step 2
Give each nonmetal a Latin prefix describing
the number of atoms present in the compound.
Examples
CO Carbon monoxide
P2O5
CO2 Carbon dioxide
CCl4
II. Binary Ionic molecular
Molecular means combination of nonmetals
Step 1
First give the name of the first nonmetal,
followed by the nonmetal name using the “ide”
suffix.
Step 2
Give each nonmetal a Latin prefix describing
the number of atoms present in the compound.
Examples
CO Carbon monoxide
P2O5 Diphosphorus Pentoxide
CCl4
CO2 Carbon dioxide
II. Binary Ionic molecular
Molecular means combination of nonmetals
Step 1
First give the name of the first nonmetal,
followed by the nonmetal name using the “ide”
suffix.
Step 2
Give each nonmetal a Latin prefix describing
the number of atoms present in the compound.
Examples
CO Carbon monoxide
P2O5 Diphosphorus Pentoxide
CCl4 Carbon tetrachloride
CO2 Carbon dioxide
III. Nonbinary Molecular Compounds
Note: Do not use Latin prefixes
Step 1
Write down the memorized polyatomic ions present in
the compound.
Step 2
Look to see if any monatomic ions are present. If
so, then cations use the normal name. If it is an
anion, then its name comes last with the “ide” suffix.
Examples
NH4Cl
NH4OH
III. Nonbinary Molecular Compounds
Note: Do not use Latin prefixes
Step 1
Write down the memorized polyatomic ions present in
the compound.
Step 2
Look to see if any monatomic ions are present. If
so, then cations use the normal name. If it is an
anion, then its name comes last with the “ide” suffix.
Examples
NH4Cl
NH4OH
Ammonium chloride
III. Nonbinary Molecular Compounds
Note: Do not use Latin prefixes
Step 1
Write down the memorized polyatomic ions present in
the compound.
Step 2
Look to see if any monatomic ions are present. If
so, then cations use the normal name. If it is an
anion, then its name comes last with the “ide” suffix.
Examples
NH4Cl
Ammonium chloride
NH4OH
Ammonium hydroxide
Compounds that Start with Hydrogen
Case 1
If the anion ends in “ide” and it is aqueous,
then use the prefix hydro and suffix “ic acid”
Case 2
If the anion ends in “ate” then drop it and
add the suffix “ic acid”
Case 3
If the anion ends in “ite” then drop it
and add the suffix “ous acid”
Case 4
If the anion ends in” ide” and is a
gas, or liquid, then leave the name
and do not use Latin prefiex
Compounds that Start with Hydrogen
Examples
HCl (aq)
HNO3
HNO2
H2O (l)
HCl (g)
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
HNO3
HNO2
H2O (l)
HCl (g)
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
HNO3
HNO2
H2O (l)
HCl (g)
chloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
HNO3
HNO2
H2O (l)
HCl (g)
chloric acid
hydrochloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
HNO3
HNO2
H2O (l)
HCl (g)
nitrate
chloric acid
hydrochloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
HNO3
HNO2
H2O (l)
HCl (g)
nitrate
chloric acid
nitric acid
hydrochloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
HNO3
nitrate
HNO2
nitrite
H2O (l)
HCl (g)
chloric acid
nitric acid
hydrochloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
chloric acid
HNO3
nitrate
nitric acid
HNO2
nitrite
nitrous acid
H2O (l)
HCl (g)
hydrochloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
chloric acid
HNO3
nitrate
nitric acid
HNO2
nitrite
nitrous acid
H2O (l)
oxide
HCl (g)
hydrochloric acid
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
chloric acid
hydrochloric acid
HNO3
nitrate
nitric acid
HNO2
nitrite
nitrous acid
H2O (l)
oxide
hydrogen oxide
HCl (g)
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
chloric acid
hydrochloric acid
HNO3
nitrate
nitric acid
HNO2
nitrite
nitrous acid
H2O (l)
oxide
hydrogen oxide
HCl (g)
chloride
Compounds that Start with Hydrogen
Examples
HCl (aq) chloride
chloric acid
hydrochloric acid
HNO3
nitrate
nitric acid
HNO2
nitrite
nitrous acid
H2O (l)
oxide
hydrogen oxide
HCl (g)
chloride
hydrogenchloride
The End