Monoatomic Ionic Nomenclature.notebook
November 13, 2013
Ionic Nomenclature
Example
With monoatomic ions
­ Metal plus a non­metal
Given a formula, provide the correct name for the ionic compound.
Names
1. Cations keep their element names.
2. Anions names have ­ide on the end.
3. NO prefixes
NaCl
sodium chloride
CaBr2 calcium bromide
Al2O3 aluminum oxide
MgS
magnesium sulfide
Dec 1­7:43 PM
Writing formulas for ionic compounds
Rules
1.
2.
3.
4.
Dec 1­7:48 PM
Example
Given the name provide the correct formula for the ionic compound.
Start with a name
Write symbol for each ion
(including charge)
"Cross over" charges to become subscripts on
opposite ions
­ Remove charge
symbols
If both subscripts are
divisible by a common
factor, then divide to get
subscripts in lowest terms.
potassium oxide
lithium bromide
K+ O2­
K2 O1 sodium sulfide
barium nitride
K2O
calcium oxide
Dec 1­7:51 PM
Dec 1­8:00 PM
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Ionic Nomenclature
Identify the correct formula for rubidium iodide
A RbI
B RbI2
C Rb2 I
D Rb2 I2
Grade:«grade»
Subject:«subject»
Date:«date»
Dec 1­8:18 PM
Nov 29­10:33 AM
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Monoatomic Ionic Nomenclature.notebook
2 Identify the correct formula for stronitum chloride
November 13, 2013
3 Identify the correct formula for aluminum oxide.
A SrCl
A
AlO
B Sr2 Cl
B
Al3O2
C SrCl2
C
Al2O3
D SrCl3
D
AlO2
Nov 29­10:34 AM
4 Identify the correct formula for magnesium sulfide.
A
MgS
B
Mg2S
C
MgS2
D
Nov 29­7:45 PM
5 What is the name of the compound with the formula CaBr2 ?
A calcium dibromide
B
calcium bromide
C calcium bromine
Mg2S3
D calcium dibromine
Nov 29­7:46 PM
6 What is the name of the compound with the formula Na2O
A
disodium oxide
B
sodium monoxide
C
disodium monoxide
D
sodium oxide
Nov 29­10:37 AM
Cations with multiple charges
­
­
Mostly transition metals
Some p­block metals
Use a Roman numeral to state the positive charge for the cation in the name.
Examples:
FeCl2 iron (II) chloride
FeCl3 iron (III) chloride
Nov 29­7:50 PM
Dec 1­8:08 PM
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Monoatomic Ionic Nomenclature.notebook
Determining Formulas
Monoatomic Ions on p.205
­
Transition metals on the bottom table
Exceptions: Ag+ , Cd 2+, and Zn2+
These ions only support one charge and do not need a Roman numeral
­ p­block metals
­ Lead (II) (Pb 2+ ) and Lead (IV) (Pb4+ )
­ Tin (II) (Sn2+ ) and Tin (IV) (Sn4+ )
November 13, 2013
­
­
­
­
Same process as monoatomic ion nomenclature.
Roman numeral tells to the charge of the cation.
Example:
Iron (III) Chloride
Fe3+
Cl­
FeCl3
Jan 17­10:31 PM
Jan 17­10:35 PM
How to determine the Roman numeral in the name.
1.
Start with formula.
CuF2 2.
"Reverse cross over" subscritps.
Subscript becomes charge value
on opposite ion.
Cu2+ F­
3.
Value of the positive charge (cation) becomes the Roman
numeral in the name.
Ionic Nomenclature
copper (II) fluoride
Grade:«grade»
Subject:«subject»
Date:«date»
Dec 1­8:12 PM
1
Identify the correct formula for chromium (II) oxide
A Cr2 O
Dec 1­8:18 PM
2 Identify the correct formula for copper (I) oxide.
A
CuO
B CrO2
B
Cu2O
C Cr2 O2
C
CuO2
D CrO
D
Cu2O2
Nov 29­10:39 AM
Jan 17­10:42 PM
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Monoatomic Ionic Nomenclature.notebook
3 What is the name of the compound with the formula CrBr3?
November 13, 2013
4 What is the name of the compound with the formula MnO2 ?
A
chromium bromide
A manganese oxide
B
chromium bromide (III)
B
C
chromium tribromide
C manganese (II) oxide
D
chromium (III) bromide
D manganese (IV) oxide
Jan 17­10:45 PM
manganese dioxide
Nov 29­10:41 AM
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