Meaning of Suffixes

Suffixes have meaning“-ide” binary compound

sodium chloride (NaCl)

“-ite” or “-ate” polyatomic compoundsulfite (SO3

2-)

sulfate (SO42-) “-ate” means one more

oxygen than “-ite”

“-ol” alcoholmethyl alcohol (methanol)

“-ose” sugarsucrose

“-ase” enzymesucrase

Prefixes – Binary Molecular CompoundsGreek Prefixes for Two Nonmetals

Number Indicated Prefixes

1 mono 2 di 3 tri 4 tetra 5 penta 6 hexa 7 hepta 8 octa 9 nona10 deca

Binary Molecular Compounds

N2O dinitrogen monoxideN2O3 dinitrogen trioxideN2O5 dinitrogen pentoxide

ICl iodine monochlorideICl3 iodine trichloride

SO2 sulfur dioxideSO3 sulfur trioxide

Oxidation States in Formulas and Names

dinitrogen monoxide N2O nitrogen (I) oxide

dinitrogen trioxide N2O3 nitrogen (III) oxide

dinitrogen pentoxide N2O5 nitrogen (V) oxide

sulfur dioxide SO2 sulfur (IV) oxide

sulfur trioxide SO3 sulfur (VI) oxide

Traditional System Stock System+1 -2

+3 -2

+5 -2

+4 -2

+6 -2