Ionic Compounds: Naming

Naming Binary Ionic Compounds Always name metal (the cation/+ ion) first 2. Write stem of nonmetal (the anion/ - ion) 3. Add ending “ide” to nonmetal Binary = only 2 types of elements (two capital letters)

Stems of nonmetals Iod Brom Chlor Fluor Hydr is the stem for H Tellur Selen Arsen Sulf Phosph Ox Nitr

Metals with one oxidation state CaO BaS AlN LiCl Al2Se3 Na2O K3N MgF2 Calcium Oxide Barium Sulfide Aluminum Nitride Lithium Chloride Aluminum Selenide Sodium Oxide Potassium Nitride Magnesium Fluoride

The First Step in Naming Find metal on PT If metal has only one oxidation state it’s easy If metal has more than one oxidation state, there’s an extra step

Metals with > 1 oxidation state Use formula to figure out which oxidation state metal ion has Ex: Fe can be Fe+2 or Fe+3 Name FeO and Fe2O3

FeO Name: Iron (II) oxide (roman numeral II = charge on Fe)

Fe2O3 Name: Iron (III) oxide (roman numeral III = charge on Fe)

Name the following TiCl3 MnO2 AuCl3 MnO Titanium (III) chloride Manganese (IV) oxide Gold (III) chloride Molybdenum (III) nitride

Naming compounds with polyatomics If it contains a polyatomic, same rule, just write the name polyatomic ion (Table E)

Name the following NaOH LiNO3 Al(NO3)3 Fe(OH)2 Sodium hydroxide Lithium nitrate Aluminum nitrate Iron (II) hydroxide