NAMING COMPOUNDS
PREFIX OR SUFFIX
MEANING
EXAMPLE
Mono-
There is 1 atom of that type in that molecule
Carbon monoxide (CO)
Di-
There are 2 atoms of that type in the molecule
Carbon dioxide (CO2)
Bi-
Hydrogen is present in the molecule
Sodium bicarbonate (NaHCO3)
-ide
There are only 2 types of atoms present in the molecule
Lead oxide (PbO)
-ate
There are 3 or more types of atoms in the molecule, and 1 type is oxygen
Calcium carbonate (CaCO3)
VALENCY TABLE
1+
2+
3+
1-
2-
3-
H 1+
Mg 2+
Al 3+
F 1-
O 2- oxide
PO4 3- Phosphate
Na 1+
Ca 2+
Fe 3+ ferric
Cl 1-
S 2- sulphide
Li 1+
Cu2+
Br1-
CO3 2- carbonate
K 1+
Zn 2+
OH 1- hydroxide
SO4 2- sulphate
Ag 1+
Pb 2+
NO3 1- Nitrate
NH4 1+ Ammonium
Fe 2+ferrous
HCO3 1- bicarbonate
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