Binary Ionic Compounds Containing a Metal Ion With a Variable Charge
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Rules for Naming Binary Ionic Compounds Containing a Metal Ion With a Variable Charge
A binary ionic compound is composed of ions of two different elements - one of which is a metal, and the other a nonmetal. For example, iron(III) iodide, FeI
3, is composed of iron ions, Fe
3+ (elemental iron is a metal), and iodide ions, I
- (elemental iodine is a nonmetal).
Rule 1. The positive ion (cation) is written first in the name; the negative ion (anion) is written second in the name.
Rule 2. The name of the cation is the same as the name of the (neutral metal) element from which it is derived. The charge on the cation is indicated using a Roman numeral, within parentheses, immediately following the name of the cation (e.g., Fe
3+ = "iron(III)", Fe
2+ = "iron(II)").
Rule 3. The anion is named by adding the suffix
-ide to the root of the (nonmetal) element name (e.g.,
iodine = I, "
iodide" = I
-;
sulfur = S, "
sulfide" = S
2-).
Note:
Greek prefixes are
not used to indicate the number of atoms of each element in the formula unit for the compound (e.g., FeI
3 is named "iron(III) iodide" not "iron(III) triiodide").
What is the correct name for the ionic compound, CrF
2?
chromic fluoride
chromium(III) difluoride
chromium(II) fluoride
krypton fluoride
fluorine(II) chromide
What is the correct name for the ionic compound, CrCl
3?
chromous chloride
chromium(II) chloride
chromium(III) trichloride
chlorine(III) chromide
chromic chloride
What is the correct name for the ionic compound, Cr
2O
3?
chromous oxide
chromic oxide
chromium(II) oxide
dicarbon trioxide
chromium(III) trioxide
What is the correct name for the ionic compound, CoBr
2?
cobalt(III) bromide
cobalt(II) dibromide
cobalt bromide
cobalt(II) bromide
cobalt(I) bromide
What is the correct name for the ionic compound, CoF
3?
cobalt fluoride
cobalt(II) fluoride
cobalt(III) trifluoride
trifluoride cobaltide
cobalt(III) fluoride
What is the correct name for the ionic compound, CuCl
2?
copper(I) chloride
copper(I) dichloride
cuprous chloride
cupric dichloride
cupric chloride
What is the correct name for the ionic compound, CuI?
copper(II) iodide
copper monoiodide
copper(I) iodide
monocopper(I) monoiodide
cupric iodide
What is the correct name for the ionic compound, FeBr
3?
ferric bromide
iron(II) bromide
iron(III) tribromide
ferrous bromide
iron(I) bromide
What is the correct name for the ionic compound, FeI
2?
ferric iodide
ferrous iodide
iron(III) iodide
iron(I) iodide
iron(II) diiodide
What is the correct name for the ionic compound, FeO?
ferric oxide
iron(III) oxide
iron(II) monoxide
iron(II) oxide
iron(I) oxide
What is the correct name for the ionic compound, PbS?
lead(IV) sulfide
leadous sulfide
lead(II) sulfide
lead sulfide
lead(I) sulfide
What is the correct name for the ionic compound, PbO
2?
potassium oxide
lead oxide
lead(II) oxide
lead(IV) dioxide
lead(IV) oxide
What is the correct name for the ionic compound, Mn
2O
3?
manganese(II) oxide
dimanganese(III) trioxide
manganese(III) trioxide
manganese(III) oxide
magnesium(III) oxide
What is the correct name for the ionic compound, MnF
3?
manganese(III) fluoride
manganese(II) fluoride
manganese(I) fluoride
magnesium(III) fluoride
fluorine(III) manganate
What is the correct name for the ionic compound, MnO
2?
manganese dioxide
manganese(IV) oxide
manganese(II) oxide
manganous oxide
manganese(I) oxide
What is the correct name for the ionic compound, Hg
2I
2?
mercury(II) iodide
mercuric iodide
mercury(I) diiodide
mercurous diiodide
mercury(I) iodide
What is the correct name for the ionic compound, HgI
2?
mercuric diiodide
mercury(I) iodide
mercuric iodide
mercury(II) diiodide
mercurous iodide
What is the correct name for the ionic compound, HgO?
mercury(II) oxide
mercurous oxide
mercury(I) oxide
mercury monoxide
mercury(II) monoxide
What is the correct name for the ionic compound, SnO
2?
tin(II) oxide
stannous dioxide
stannic dioxide
tin(IV) oxide
stannous oxide
What is the correct name for the ionic compound, SnI
2?
stannic iodide
tin(IV) diiodide
stannous iodide
tin(II) diiodide
tin(IV) iodide
What is the correct formula unit for the ionic compound, stannous chloride?
SnCl
2
SnCl
4
Sn
4Cl
Sn
2Cl
Sn
2Cl
2
What is the correct formula unit for the ionic compound, tin(IV) chloride?
SnCl
2
Sn
4Cl
Sn
2Cl
Sn
2Cl
2
SnCl
4
What is the correct formula unit for the ionic compound, stannous sulfide?
SnS
2
SnS
SnS
4
Sn
2S
Sn
4S
2
What is the correct formula unit for the ionic compound, lead(II) chloride?
PbCl
PbCl
4
LdCl
2
PbCl
2
Pb
2Cl
What is the correct formula unit for the ionic compound, chromium(III) fluoride?
CrF
2
Cr
3F
CrF
3
CrF
Cr
2F
3
What is the correct formula unit for the ionic compound, cobalt(II) chloride?
Co
2Cl
CoCl
CoCl
4
CoCl
2
Co
2Cl
2
What is the correct formula unit for the ionic compound, cuprous oxide?
Cu
2O
CuO
CuO
2
CuO
4
Cu
2O
2
What is the correct formula unit for the ionic compound, copper(II) sulfide?
CuS
2
Cu
2S
Cu
2S
2
CoS
CuS
What is the correct formula unit for the ionic compound, iron(II) chloride?
FeCl
FeCl
2
FeCl
3
InCl
2
Fe
2Cl
What is the correct formula unit for the ionic compound, ferric oxide?
FeO
Fe
2O
Fe
3O
4
Fe
3O
2
Fe
2O
3
What is the correct formula unit for the ionic compound, lead(II) iodide?
PbI
PbI
2
Pb
2I
PbI
4
Pb
2I
2
What is the correct formula unit for the ionic compound, manganese(II) chloride?
Mn
2Cl
MnCl
4
Mn
2Cl
2
MnCl
2
MnCl
What is the correct formula unit for the ionic compound, manganese(II) sulfide?
MnS
2
Mn
2S
MnS
Mn
2S
2
MnS
4
What is the correct formula unit for the ionic compound, mercury(I) chloride?
Hg
2Cl
2
HgCl
HgCl
2
Hg
2Cl
Hg
2Cl
4
What is the correct formula unit for the ionic compound, mercuric fluoride?
HgF
Hg
2F
2
HgF
4
Hg
2F
HgF
2
The formula unit for the ionic compound, chromium(II) chloride, consists of which of the following?
1 Cr
2+ ion and 1 Cl
2- ion
1 Cr
+ ion and 1 Cl
- ion
1 Cr
2- ion and 2 Cl
+ ions
1 Cr
2+ ion and 2 Cl
- ions
1 Cr
3+ ion and 3 Cl
- ions
The formula unit for the ionic compound, cuprous bromide, consists of which of the following?
1 Cu
2+ ion and 2 Br
- ions
1 Cu
+ ion and 1 Br
- ion
2 Cu
+ ions and 1 Br
2- ion
1 Cu
- ion and 1 Br
+ ion
1 Cu
2+ ion and 1 Br
2- ion
The formula unit for the ionic compound, copper(I) sulfide, consists of which of the following?
1 Cu
2+ ion and 1 S
2- ion
2 Cu
+ ions and 1 S
2- ion
1 Cu
2+ ion and 2 S
- ions
1 Cu
+ ion and 1 S
- ion
2 Cu
- ions and 1 S
2+ ion
The formula unit for the ionic compound, cupric oxide, consists of which of the following?
1 Cu
2+ ion and 1 O
2- ion
2 Cu
+ ions and 1 O
2- ion
1 Cu
2+ ion and 2 O
- ions
1 Cu
+ ion and 1 O
- ion
1 Cu
2- ion and 1 O
2+ ion
The formula unit for the ionic compound, iron(III) fluoride, consists of which of the following?
2 Fe
3+ ions and 3 F
2- ions
1 Fe
2+ ion and 2 F
- ions
1 Fe
2+ ion and 1 F
2- ion
1 Fe
+ ion and 1 F
- ion
1 Fe
3+ ion and 3 F
- ions
The formula unit for the ionic compound, ferrous bromide, consists of which of the following?
1 Fe
2- ion and 1 Br
2+ ion
1 Fe
3+ ion and 3 Br
- ions
2 Fe
3+ ions and 3 Br
2- ions
1 Fe
2+ ion and 2 Br
- ions
1 Fe
2+ ion and 1 Br
2- ion
The formula unit for the ionic compound, iron(II) sulfide, consists of which of the following?
2 Fe
3+ ions and 3 S
2- ions
1 Fe
2+ ion and 1 S
2- ion
1 Fe
2+ ion and 2 S
- ions
1 Fe
3+ ion and 3 S
- ions
1 Fe
+ ion and 1 S
- ion
The formula unit for the ionic compound, lead(II) fluoride, consists of which of the following?
2 Pb
+ ions and 1 F
2- ion
1 Pb
2+ ion and 1 F
2- ion
1 Pb
4+ ion and 4 F
- ions
1 Pb
+ ion and 1 F
- ion
1 Pb
2+ ion and 2 F
- ions
The formula unit for the ionic compound, manganese(II) oxide, consists of which of the following?
1 Mn
2+ ion and 2 O
- ions
2 Mn
+ ions and 1 O
2- ion
1 Mn
+ ion and 1 O
- ion
1 Mn
2+ ion and 1 O
2- ion
1 Mn
2- ion and 1 O
2+ ion
The ionic compound, manganese(II) iodide, is composed of which of the following pairs of ions?
1 Mg
2+ ion and 2 I
- ions
1 Mn
- ion and 1 I
- ion
1 Mn
2+ ion and 2 I
- ions
1 Mn
2+ ion and 1 I
2- ion
1 Mn
+ ion and 1 I
- ion
The ionic compound, mercury(I) bromide, is composed of which of the following pairs of ions?
1 Hg
2+ ion and 2 Br
- ions
1 Hg
22+ ion and 2 Br
- ions
1 Hg
2+ ion and 1 Br
- ion
1 Hg
+ ion and 1 Br
- ion
2 Hg
+ ions and 1 Br
2- ion
The formula unit for the ionic compound, mercuric chloride, consists of which of the following?
1 Hg
2+ ion and 2 Cl
- ions
1 Hg
+ ion and 1 Cl
- ion
1 Hg
22+ ion and 2 Cl
- ions
2 Hg
+ ions and 1 Cl
2- ion
1 Hg
22+ ion and 1 Cl
2- ion
The formula unit for the ionic compound, mercury(II) sulfide, consists of which of the following?
1 Hg
+ ion and 1 S
- ion
1 Hg
22+ ion and 1 S
2- ion
1 Hg
2+ ion and 2 S
- ions
2 Hg
+ ions and 1 S
2- ion
1 Hg
2+ ion and 1 S
2- ion
The formula unit for the ionic compound, stannic sulfide, consists of which of the following?
1 Sn
2+ ion and 1 S
2- ion
1 Sn
4+ ion and 4 S
- ions
1 Sn
2+ ion and 2 S
- ions
1 Sn
4+ ion and 2 S
2- ions
1 Sn
4- ion and 2 S
2+ ions
The ionic compound, tin(II) fluoride, is composed of which of the following pairs of ions?