Naming Inorganic Compounds lonic compounds Chemical Nomenclature Acids Molecular compounds Rules for Naming Monatomic Ions Positive ions---Cations 1.Cations formed from metal atoms name as the metal. Na*Sodium ion Mg:Magnesium ion Zn2+:Zinc ion K+:Potassium ion Ca2:Calcium ion Ba2 Barium ion Li:lithium ion Al3+:Aluminum ionRules for Naming Monatomic Ions Positive ions---Cations 1. Cations formed from metal atoms name as the metal. Ionic compounds Chemical Nomenclature Acids Molecular compounds      + + Na : : Li : lithium ion Sodium ion K Potassium ion  2 2 2 2+ : : : Ba : Mg Magnesium ion Zn Zinc ion Ca Calcium ion Barium ion    3+ Al : Aluminum ion