Transcript Ionic Bonding Notes

IONIC COMPOUNDS
FORMULA WRITING
&
NAMING
1
Writing Binary Ionic Chemical Formulas
A chemical formula represents the compound
using the elemental symbols
How to write Binary Ionic Chemical Formulas:
1) Cation is always first, anion second
2) Overall oxidation number (charge) must equal
ZERO!!
2
Writing Binary Ionic Chemical Formulas
EXAMPLE #1
potassium oxide
EXAMPLE #2
sodium chloride
EXAMPLE #3
lithium nitride
3
Learning Check #2
Write the chemical formula for the following
binary ionic compounds
A
sodium fluoride
B
cesium sulfide
C
barium phosphide
4
Writing Binary Ionic Chemical Names
A chemical name represents the compound
using the actual names of the elements
How to write Binary Ionic Chemical Names:
1) Name the cation first, anion second
2) Drop the ending on the anion and add “-ide”
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Writing Binary Ionic Chemical Names
EXAMPLE
#1
MgS
EXAMPLE
#2
LiCl
EXAMPLE
#3
K2Se
6
Learning Check #3
Write the chemical name for the following binary
ionic compounds
A
NaF
B
BeS
C
RaBr2
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Ionic Compounds and Transition Metals
• Transition metals are found in Groups 3B-12B on the
periodic table
• The charge of the transition metal varies and
depends on the element it forms an ionic bond with
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Writing Ionic Chemical Formulas with
Transition Metals
How to write Ionic
Chemical Formulas
with Transition
Metals:
1) Cation first,
anion second
2) Charge of
transition metal
is in parentheses
3) Overall oxidation
number (charge)
must equal
ZERO!!
EXAMPLE #1
cobalt (II) sulfide
EXAMPLE #2
iron (II) bromide
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Writing Ionic Chemical Names with Transition Metals
How to write Ionic
Chemical Names with
Transition Metals:
1) Transition metal
first, non-metal
second
2) Specify charge of
transition metal
with roman
numerals in
parentheses
3) Drop ending of
nonmetal and add
“-ide”
EXAMPLE
#1
ZnCl2
EXAMPLE
#2
Fe2O3
10
Ionic Compounds and Polyatomic Ions
What is a
polyatomic ion?
A polyatomic ion
is a group of two
or more atoms
bound together
that have a
charge
11
Writing Ionic Chemical Formulas with
Polyatomic Ions
How to write
Ionic Chemical
Formulas with
Polyatomic Ions:
1) Metal first,
polyatomic
ion second
2) Overall
oxidation
number
(charge) must
equal ZERO!!
EXAMPLE #1
EXAMPLE #2
sodium chlorate
calcium nitrite
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Writing Ionic Chemical Names with
Polyatomic Ions
How to write
Ionic Chemical
Names with
Polyatomic Ions:
1) Metal first,
polyatomic
ion second
2) DO NOT drop
the ending of
the
polyatomic
ion
EXAMPLE
#1
ZnSO4
EXAMPLE
#2
K2CO3
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