Ionic compounds - Transition metals Helping students learn the names and formula of a range of ionic compounds involving transition metals and variable oxidation states. Simple drag and drop exercise. Drag the Chemical formula to their names Iron(II) oxide Iron(III) oxide Copper(I) chloride Copper(II) chloride Lead(II) oxide Lead(IV) oxide Chromium(III) oxide Chromium(II) oxide Tin(IV) chloride Tin(II) chloride Manganese(II) oxide Manganese(VII) oxide Chromium(IV) oxide Manganese(IV) oxide Manganese(III) oxide FeO Fe2O3 CuCl CuCl2 PbO PbO2 Cr2O3 CrO SnCl4 SnCl2 MnO Mn2O7 CrO2 MnO2 Mn2O3