Final answer:
The element that forms two or more ions with different ionic charges is Mn (Manganese). Manganese can form ions with charges of +2, +3, +4, +6, and +7, among others.
Step-by-step explanation:
The element that forms two or more ions with different ionic charges is Mn (Manganese). Manganese can form ions with charges of +2, +3, +4, +6, and +7, among others. This ability to form multiple ions with different charges is known as variable oxidation states. For example, Mn can form the ions Mn2+ (Manganese(II)), Mn3+ (Manganese(III)), Mn4+ (Manganese(IV)), Mn6+ (Manganese(VI)), and Mn7+ (Manganese(VII)).