1. Naming Molecular Compounds
Notes

2. Molecular=Covalent Molecular compounds contain covalent bonds
Nonmetal-Nonmetal
Since there are no ionic charges, no way to know the formula unless it is indicated in the name
Use prefixes

3. Prefixes 1 mono 2 di 3 tri 4 tetra 5 penta 6 hexa 7 hepta 8 octa
9 nona
10 deca
The prefix represents the number of atoms in the formula (the subscript)
Change the ending of the second element to –ide
Example
N2O5
Dinitrogen pentoxide
**Only exception- leave off the prefix mono on the first element in the compound

4. Example
NO2
mononitrogen dioxide
*Note the correct name is nitrogen dioxide
*Never use mono on the first element
Example
N2O3
dinitrogen trioxide