Naming
Ionic
Compounds
What is a compound?
A
compound is a pure substance
consisting of two or more different
elements
 There
are two types
of compounds:
 Covalent
 Ionic
Name the following ionic
compounds:
 NaCl
 CaI2
__________________
Having trouble???
__________________
Use
this

Li2SO
4
flowchart to help you discover
___________________________
how to name these compounds!
 FeO
__________________
 Cu(NO3)2
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Ionic
Compounds
Name the
cation
Name the
anion
Forms one
(+) ion
Forms
more than
one (+) ion
Single ion
Polyatomic
ion
Use
element
name
Use element
name and
Roman
numeral
Use element
name and
add –ide
ending
Use name of
polyatomic
ion
Ready to practice?
Ionic Compounds
 Ionic
compounds are composed of
a metal and a non-metal
 Metals
are located to the left of the
stair-step
Metals
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Non-metals
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e-
Cations
A
cation is a
positively (+)
charged ion
Metals are
cations
To form a cation,
a metal atom
lose one or more
electrons
Ready to practice?
Li
3 p+
e-
e-
Neutral Li atom has 3 p+ and 3 e(+3) + (-3) = 0 (no charge)
e-
Li
3 p+
eA lithium ion has 3 p+ and 2 e(+3) + (-2) = +1
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e-
Anions
An
anion is a
negatively (−)
charged ion
Non-metals are
anions
To form an anion,
a non-metal
gains one or
more electrons
Ready to practice?
eee-
O
8 p+
eee-
e-
Neutral O atom has 8 p+ and 8 e(+8) + (-8) = 0 (no charge)
e-
ee-
O
8 p+
ee-
e-
An oxygen ion has 8 p+ and 6 e(+8) + (-6) = -2
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Fixed-Charge Ions
 Most
metals form
cations with a
single charge
 For example: Li+,
Mg2+, Cl-, O2 You can find
these charges
using group
numbers
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Variable Charges
Some
transition metals can
form cations with more than
one charge
Element
Charges
Copper (Cu)
2+ , 3+
Lead (Pb)
2+ , 4+
Chromium (Cr)
Iron (Fe)
Tin (Sn)
2+ , 3+
2+ , 3+
2+ , 4+
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Naming Cations with a Fixed
Charge
When
naming a cation with a
fixed charge, simply say the
element’s name
The element name can be
found on the periodic table
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Naming Cations with a
Variable Charge
 To
name a cation with a variable
charges, use a Roman numeral to
indicate the charge
 Examples:
Ion
Name
Cu2+
Copper (II)
Pb4+
Lead (IV)
Fe3+
Iron (III)
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Monatomic Ions
A
monatomic ion is an ion that
is made of only one atom
Examples:
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Na+, Ca2+, Cl-, S2-
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Polyatomic Ions
A
polyatomic ion is an ion
made up of more than one
type of atom
Examples:
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SO42-, NO2-, PO43-
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Naming Single Anions
To
name a single anion use the
root of the element name and
add the ending –ide
Chlorine + -ide  Chloride
root
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Naming Polyatomic Anions
To
name polyatomic anions, use the
name of the polyatomic ion
These
ions
usually end in
-ate or -ite
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Name the following ionic
compounds:
 NaCl
__________________
 CaI2
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 Li2SO4
___________________________
 FeO
__________________
 Cu(NO3)2
___________________________
Check your answers!
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Check Your Answers!
 NaCl
sodium chloride
 CaI2
calcium iodide
 Li2SO4
lithium
sulfate
 FeO
 Cu(NO3)2
nitrate
iron (II) oxide
copper (II)