Final answer:
Iron (Fe) can form two or more ions with different ionic charges, specifically Fe²+ and Fe³+, which is a common behavior among transition metals.
Step-by-step explanation:
The element that forms two or more ions with different ionic charges is Iron (Fe). This is a characteristic of some transition metals, where they are capable of losing different numbers of electrons to form cations with various charges. For iron specifically, it can lose two electrons to form Fe²+ or three electrons to form Fe³+. When these ions combine with anions, they create different ionic compounds with unique physical and chemical properties, and therefore the iron ions need different names to distinguish them.