Scandium (Sc) is a chemical element with the atomic number 21. It is a soft, silvery-white metal that belongs to the group of transition metals. Scandium is relatively rare in the Earth's crust and is often found in minerals such as thortveitite and garnet. It is primarily used in aerospace components and sports equipment due to its lightweight and strength-enhancing properties. Scandium has a melting point of 1541 °C and a boiling point of 2836 °C. It is known for its ability to form alloys with other metals, particularly aluminum, which improves their mechanical properties. Scandium compounds, such as scandium oxide, are also used in lighting and electronics.