NOMENCLATURE

1
NOMENCLATURE
OF IONIC
COMPOUNDS
2
Coil of wire
battery
_

_

compass
The compass will align with the coil of wire if
current is flowing. Even though a battery is
connected, no electrical current is flowing
through the water.
3
Coil of wire
battery
_

_

compass
Copper Chloride
Copper chloride is added to the water. It
dissolves in the water.
4
If copper atoms are going to the negative side,
what charge do they have?
What about the chlorine atoms?
Coil of wire
battery
_

_

compass
Copper Chloride
5
Since the atoms wandered towards each side, lets
call them IONS from the Greek word, ion, meaning
wanderer.
Coil of wire
battery
_

_

compass




Copper Chloride
6
Since the negative side of a battery is called
the cathode (way down), well call ions that go
towards it cations. The ions that go towards the
positive anode are called anions.
Also, since the positive side of a battery is
called the anode (way up), well call ions that
go towards it anions.
_

anode
cathode
_

anode
cathode




Cations
Anions




Copper Chloride CuCl2
7
Naming compounds by taking a metal from groups
1A, 1B, or 1C, and combining with a non-metal.
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
8
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9
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10
How do you know the charge?
Li
Be
B
C
2e-
6p
3p
4p
5p
1
IA
VIIA
VIIIA
3
2
IIA
IIIA
VIA
VA
IVA
11
N
O
F
Ne
Na
8e-
2e-
8p
10p
7p
9p
11p
-1
0
1
4
IA
VIIA
VIIIA
-3
-2
-4
3
2
IIA
IIIA
VIA
VA
IVA
12
-1
2
F
Be
2e-
2e-
4p
9p
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
13
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
14
Berylium Fluoride
BeF2
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
15
For ionic compounds with a metal from group 1A,
2A, 3A place the metal first and name it
first. The non-metal is put last and named last.
The number of metals or non-metals is depends on
how many it takes to balance the charges.
-1
1
IA
VIIA
VIIIA
-3
-2
2
IIA
IIIA
VIA
VA
IVA
16
Aluminum Chloride
-1
3
Cl
Al
AlCl3
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
17
-2
3
O
Fe
Fe2O3
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
18
The next slides show polyatomic ions and how they
will balance their charges when combining with a
metal.
19
-1
2
NO3
Zn
Zn(NO3)2
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
Zinc 2
20
-2
3
SO4
Fe
Fe2(SO4)3
-1
0
1
4
IA
VIIA
VIIIA
-3
-4
-2
3
2
IIA
IIIA
VIA
VA
IVA
Now called Iron(III) sulfate
Iron3