Naming Molecular Compounds

Binary Covalent Compounds

Use prefixes to indicate number of atoms of each type (mono is usually dropped from the first element)

The ending of the 2nd element is changed to -ide

Binary Acids

Change “hydrogen” to the prefix “hydro-”

Change the ending of the non-metal to “-ic”

Add the word acid to the very end of the name

Oxyacids

Omit “hydrogen”

Start with the root name of the anion

Replace -ate with -ic, or -ite with -ous

Add the word “acid” on the end

Fe₂S₃

iron(III) sulfide