Trivalent metals are elements that can form three positive charges, or cations, when they lose electrons. This property is due to their electron configuration, which allows them to easily give up three electrons from their outer shell. Common examples of trivalent metals include aluminum, iron, and chromium. These metals are often found in various compounds and play important roles in industrial applications. In addition to their chemical properties, trivalent metals are significant in biological systems. For instance, iron is essential for transporting oxygen in the blood, while aluminum is used in many consumer products. Understanding trivalent metals helps in fields like chemistry, materials science, and biology.