Transition elements, also known as transition metals, are a group of metallic elements found in the central block of the periodic table, specifically in groups 3 to 12. They are characterized by their ability to form variable oxidation states and to create colored compounds. Common examples include iron, copper, and nickel. These elements are known for their high melting and boiling points, as well as their good conductivity of heat and electricity. Transition metals often serve as important catalysts in chemical reactions and are widely used in various industries, including construction and electronics.