1. Element
Symbol
Latin Name
Sodium Na
Natrium
Potassium K
Kalium
Iron Fe
Ferrum
Copper Cu
Cuprum
Silver Ag
Argentum
Tin Sn
Stannum
Antimony Sb
Stibium
Gold Au
Aurum
Mercury Hg
Hydrargyrum
Tungsten W
Wolfram (German)

2. CHEMICAL FORMULA
Shows the elements and number of atoms per element present in a given compound
Ex. NaCl contains 1 Na atom and 1 Cl atom
A number written as a subscript indicates the number of atoms in the element it is immediately written after.
Ex. H2O = 2 H atoms + 1 O atom
If a parenthesis is used, it changes the amount of all atoms written inside it.
Ex. Ca(OH)2 = 1 Ca atom + 2 O atoms + 2 H atoms

3. COUNT THE NUMBER OF ATOMS PER ELEMENT PRESENT
MgCl2
KMnO4
NH4OH
Al(OH)3
(NH4)2SO4
1 Mg 2 Cl
1 K 1 Mn 4 O
1 N 5 H 1 O
1 Al 3 O 3 H
2 N 8 H 1 S 4 O

4. IMPORTANCE OF NAMING COMPOUNDS
There are more than 100 elements.
There are millions of compounds.
50,000 compounds are being developed each year!

5. BINARY IONIC COMPOUNDS
Composed of two monoatomic ions, cation (positive metal ion) and anion (negative non-metal ion).
a. metal has single charge
b. metal has multiple charges

6. Bromine Br - Brom - Bromide Carbon C 4 - Carb - Carbide Chlorine Cl -
Element
Symbol and Charge
Stem Name
Name of Anion
Bromine
Br -
Brom -
Bromide
Carbon
C 4 -
Carb -
Carbide
Chlorine
Cl -
Chlor -
Chloride
Fluorine
F -
Fluor -
Fluoride
Iodine
I -
Iod -
Iodide
Nitrogen
N 3 -
Nitr -
Nitride
Oxygen
O 2 -
Ox -
Oxide
Phosphorus
P 3 -
Phosph -
Phosphide
Sulfur
S 2 -
Sulf -
sulfide

7. NAMING IONIC COMPOUNDS
BINARY IONIC COMPOUNDS
a. METAL HAS A SINGLE CHARGE -The name of the metal is written first followed by the name of the non-metal. The name of the non-metal is changed such that it ends in –ide.
Ex. K2S – potassium sulfide
Mg3P2 – magnesium phosphide

8. b. METAL HAS MULTIPLE CHARGES – follows the same rule as metals with single charge except that the charge is identified with by a roman number enclosed in a parenthesis.
Ex. FeO – iron (II) oxide
Fe2O3 – iron (III) oxide

9. METALS WITH MULTIPLE
OXIDATION NUMBERS

10. CoMe Go +1,+2,+3 Metal Oxidation Number Stock System Classical System
Copper +1
Copper (I)
Cuprous +2
Copper (II)
Cupric
Mercury
Mercury (I)
Mercurous
Mercury (II)
Mercuric
Gold
Gold (I)
Aurous +3
Gold (III)
Auric
CoMe Go +1,+2,+3

11. CoMIC +2,+3 Metal Oxidation Number Stock System Classical System
Cobalt +2
Cobalt (II)
Cobaltous +3
Cobalt (III)
Cobaltic
Manganese
Manganese (II)
Manganous
Manganese (III)
Manganic
Iron
Iron (II)
Ferrous
Iron (III)
Ferric
Chromium
Chromium (II)
Chromous
Chromium (III)
Chromic
CoMIC +2,+3

12. TiLe +2,+4 Metal Oxidation Number Stock System Classical System Tin +2
Tin (II)
Stannous +4
Tin (IV)
Stannic
Lead
Lead (II)
Plumbous
Lead (IV)
Plumbic
TiLe +2,+4

13. BINARY
MOLECULAR
COVALENT
COMPOUND
- Compound composed of two different non-metallic elements.

14. STEPS IN NAMING BINARY MOLECULAR COVALENT COMPOUND
1. The more electronegative non-metallic element is written or named last. This is usually the element present on the right side of the periodic table.
O + S = SO or OS?

15. GREEK NUMERICAL PREFIXES
2. Greek prefixes are used to identify the number of atoms per element present. If the first element consists of only one atom, the numerical prefix mono- is usually omitted.
GREEK NUMERICAL PREFIXES 1
mono- 6
hexa- 2
di- 7
hepta- 3
tri- 8
octa- 4
tetra- 9
nona- 5
penta- 10
deca-

16. 3. For the second element, the stem name is retained and the suffix –ide is added to the it.
O + S = SO?
+6 -2
S O
S O 3
Sulfur trioxide

17. Diphosphorus pentoxide
CO2
Carbon dioxide
CCl4
Carbon tetrachloride
N2O
Dinitrogen monoxide
N2O4
Dinitrogen tetroxide
P2O5
Diphosphorus pentoxide

18. EXCEPTIONS TO THE RULE H2O - water NH3 - ammonia PH3 - phosphine
CH methane