Naming Binary Molecular

Compounds

Binary Molecular CompoundsBinary Molecular Compounds

Compounds between two nonmetals First element in the formula is named

first. Keeps its element name Gets a prefix if there is a subscript

on it Second element is named second

Use the root of the element name plus the -ide suffix

Always use a prefix on the second element

List of Prefixes

1 = mon(o) 2 = di 3 = tri 4 = tetra 5 = penta 6 = hexa 7 = hepta 8 = octa 9 = nona 10 = deka

Naming Binary Compounds

Naming Binary Compounds

P2O5 =

CO2 =

CO =

N2O =

diphosphorus pentoxide

carbon dioxide

carbon monoxide

dinitrogen monoxide

Practice – Write the FormulaCompound Name Compound Formula

Carbon dioxide

Carbon monoxide

Diphosphorus pentoxide

Dinitrogen monoxide

Silicon dioxide

Carbon tetrabromide

Sulfur dioxide

Phosphorus pentabromide

Iodine trichloride

Nitrogen triiodide

Dinitrogen trioxide

Check next slide for answers

Answers – Write the FormulaCompound Name Compound Formula

Carbon dioxide CO2

Carbon monoxide CO

Diphosphorus pentoxide P2O5

Dinitrogen monoxide N2O

Silicon dioxide SiO2

Carbon tetrabromide CBr4

Sulfur dioxide SO2

Phosphorus pentabromide PBr5

Iodine trichloride ICl3

Nitrogen triiodide NI3

Dinitrogen trioxide N2O3

Practice – Name the Compounds

Compound Formula

Compound Name

N2O4

SO3

NO

NO2

As2O5

PCl3

CCl4

H2O

SeF6

Check next slide for answers

Answers – Name the Compounds

Compound Formula

Compound Name

N2O4 dinitrogen tetroxide

SO3 sulfur trioxide

NO nitrogen monoxide

NO2 nitrogen dioxide

As2O5 diarsenic pentoxide

PCl3 phosphorus trichloride

CCl4 carbon tetrachloride

H2O dinitrogen monoxide

SeF6 selenium hexafluoride