Chemistry Study Tool: Covalent Bonding

Diatomic Molecules

2 nonmetals; same element

Only elements that bond to themselves across the top of the period:

H2, N2, O2

Only elements that bond to themselves in the Halogens (Group 17):

F2, Cl2, Br2, I2

Formula for Diatomic Molecules

element symbol written once

Subscript for Diatomic Molecules

always 2

Binary Molecules

2 nonmetals; different elements

Subscript: 1 (Binary Molecules)

mono-

Subscript: 2 (Binary Molecules)

di-

Subscript: 3 (Binary Molecules)

tri-

Subscript: 4 (Binary Molecules)

tetra-

Subscript: 5 (Binary Molecules)

penta-

Subscript: 6 (Binary Molecules)

hexa-

Subscript: 7 (Binary Molecules)

hepta-

Subscript: 8 (Binary Molecules)

octa-

Subscript: 9 (Binary Molecules)

nona-

Subscript: 10 (Binary Molecules)

deca-

Element Name: Carbon| Compound Name:?

Carbide

Element Name: Oxygen| Compound Name:?

Oxide

Element Name: Iodine| Compound Name:?

Iodide

Element Name: Sulfur| Compound Name:?

Sulfide

Element Name: Phosphorus| Compound Name:?

Phosphide

Element Name: Fluorine| Compound Name:?

Fluoride

Element Name: Chlorine| Compound Name:?

Chloride

Element Name: Bromine| Compound Name:?

Bromide

Element Name: Nitrogen| Compound Name:?

Nitride

Element Name: Selenium| Compound Name:?

Selenide

Element Name: Hydrogen| Compound Name:?

Hydride

Example Questions: SO3

Sulfur Trioxide

Example Questions: Cl4H7

Tetrachlorine hepta hydride

Example Questions: Carbon Dioxide

CO2

Example Questions: Hexaiodine Nonanitride

I6Na