1. Covalent Nomenclature
You will be able to recognize,write formulas and name covalent compounds. It’s so easy you will want to do everything this way!

2. Covalent Bonding Sharing of electrons Usually 2 nonmetals [H]
No +/- attraction!
CO2 N2O3 SO3 BH3

3. Greek Prefixes
Naming of covalent compounds is based upon the use of Greek prefixes (just like hydrates)
1 mono-
2 di-
3 tri-
4 tetra-
5 penta-
6 hexa-
7 hepta-
8 octa-
9 nona-
10 deca-

4. Covalent Naming N2O3 PCl5 CO2 NO NI3 B2H6
1. Name the first element as the element. Add a prefix, unless there is only one of the atom.
2. Name the second element with the –ide ending. ALWAYS add a prefix to indicate the number of atoms.
N2O3
PCl5
CO2 NO
NI3
B2H6

5. Writing Formulas Diarsenic trioxide Carbon monoxide
Dinitrogen pentoxide

6. Bonding by sharing electrons to get a full outside shell (s & p)
NAMING
IONIC
Bonding by charges
COVALENT
Fixed
metal
2 nonmetals
M + NM
M + PI
Fixed: Groups 1-2
Al+3,Ag+1, Zn+2,Cd+2
VARIABLE
Use Greek prefixes (2nd name always has prefix)
Must include charge of metal as roman numerals
Metal( ) + NM or PI

7. Names?
As3O
Li3N
Cu3(PO4)2
N5O7

8. Formulas? Zinc sulfite Diphosphorous monoxide Nickel (III) nitride
DON’T GET BURNED!