9.2 NOMMENCLATURE
Binary Covalent Rules
1)
Left to Right
Binary Covalent Rules
1)
Left to Right
SiO2
silicon dioxide
O2Si
dioxygen silicide
Binary Covalent Rules
Left to Right
2) “-ide” be back!
1)
Binary Covalent Rules
Left to Right
2) “-ide” be back!
1)
SiO2
silicon dioxide
O2Si
dioxygen silicide
Binary Covalent Rules
Left to Right
2) “-ide” be back!
3) Junkies need their PRE-fix
1)
H2 O
dihydrogen monoxide
N2O
dinitrogen monoxide
NO
nitrogen monoxide
SF6
sulfur hexafluoride


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

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

Mono
Di
Tri
Tetra
Penta
Hexa
Hepta
Octa
Nona
Deca
Pre---FIXES

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
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1
2
3
4
5
6
7
8
9
10
Binary Covalent Rules
Left to Right
2) “-ide” be back!
3) Junkies need their PRE-fix
1)
a. EXCLUDE MONO on first element
What is a binary molecular
compound?
A compound containing only two different
types of atoms that are COVALENTLY
bonded
N2O

CCl4

Carbon tetrachloride

As2O3

Diarsenic trioxide

Br2

Bromine

H2O2

Dihydrogen dioxide

NF3

Nitrogen Trifluoride
Practice

H2O dihydrogen monoxide

water

H2O2 dihydrogen dioxide

hydrogen peroxide

NH3 nitrogen trihydride

ammonia

N2H4 dinitrogen tetrahydride

hydrazine

N2O dinitrogen monoxide

nitrous Oxide

NO

nitric Oxide
nitrogen monoxide
COMMON NAMES
Using the rules for naming binary
molecular compounds, describe
how you would name N2O4.
Element on the left
does it need a prefix.
If yes assign it.
2. Identify second
element and change
ending to ide.
3. Assign prefix to
second element.
1.
Yes 2=di
Dinitrogen
O-oxygen = oxide
4=tetra
Tetroxide
Dinitrogen tetroxide
Acids
ACIDS
Oxyacids
Binary
Acids
OxyANION root – ic + Acid
Hydro + element-ic + acid
H2SO4
HCl
Sulfuric Acid
Hydrochloric Acid
What is the difference between a
binary acid and an oxyacid?
Binary acids contain hydrogen and one
other element, they are named with the
prefix hydro- and the root of the other
element with the suffix –ic acid
 Oxyacids contain oxygen bonded to
another non-metal element, they are
named based off the OXYANION that they
are formed from.

Binary Acids
Sulfate
SO4
Phosphate
PO4
Nitrate
NO3
Carbonate
CO3
Chlorate
ClO3
Oxyacids
Sulfate
H
2SO4
SO42- Sulfuric Acid
Phosphate
H
3PO4
PO43- Phosphoric Acid
Nitrate
HNO
3
NO3- Nitric Acid
Carbonate
H
2CO3
CO32- Carbonic Acid
HClO
Chlorate
3
ClO3- Chloric Acid
Oxyacids

Perchloric Acid

HClO4
+1

Chloric Acid

HClO3
----

Chlorous Acid

HClO2
-1

Hypochlorous Acid

HClO
-2
Oxyacids

H2SO3

Sulfurous Acid

HNO

Hyponitrous Acid

HClO4

Perchloric Acid

H3PO4

Phosphoric Acid
Practice