Naming Covalent Bonds

Write the names of both elements.

Change the final ending to -ide.

Add prefixes to indicate subscripts.

Only use mono- prefix with oxide.

Molecular Names

PREFIX mon- di- tri- tetra- penta- hexa- hepta-

SUBSCRIPT1234567

Molecular Names

CCl4

N2O

SF6

• carbon tetrachloride

• dinitrogen monoxide

• sulfur hexafluoride

Molecular Names

Write the more metallic element first.

Add subscripts according to prefixes.

Molecular Formulas

phosphorus trichloride

dinitrogen pentaoxide

dihydrogen monoxide

• PCl3

• N2O5

• H2O

Molecular Formulas

The Seven Diatomic Elements

Br2 I2 N2 Cl2 H2 O2 F2

Molecular Formulas

Diatomic Molecules

Diatomic means that there is 2 of the same atom. These elements can not exist in nature as a single atom. They have to be 2.