Molecular Naming/Formulas

Common Prefixes

100

1

Mono-

200

Tetra-

4

300

5

Penta-

400

Deca-

10

500

7

Hepta-

Naming Rules

100

This prefix is never included on the first element

Mono-

200

The ending of the second element is always changed to this

-ide

300

Spot the problem: H₂O - dihydride monoxygen

the ending of the second element should be changed to -ide, not the first

400

Spot the problem: CO₂ - monocarbon dioxide

Never use the prefix mono on the first element

500

Spot the problem: Carbon monooxide

The o at the end of mono- should be dropped for adding to oxide, never two vowels in a row

Write the Formula

100

Iodine monobromide

IBr

200

Bromine pentachloride

BrCl₅

300

Dinitrogen monoxide

N₂O

400

Diphosphorus pentoxide

P₂O₅

500

Dinitrogen heptoxide

N₂O₇

Name It

100

CS₂

Carbon disulfide

200

CCl₄

Carbon tetrachloride

300

SF₆

Sulfur hexafluoride

400

N₂O₃

Dinitrogen trioxide

500

P₄O₁₀

Tetraphosphorus decoxide

Mystery

100

Molecular compounds consist of these elements

Nonmetals

200

This type of compound contains only 2 elements

Binary compound

300

The only nonmetal located on the left side of the periodic table is

Hydrogen

400

Name the molecule: SeBr₆

Selenium hexabromide

500

Give the formula: Trisulfur hexafluoride

S₃F₆