Yttrium (Y) is a chemical element with the atomic number 39. It is a silvery-metallic transition metal that is often found in rare earth minerals. Yttrium is primarily used in electronics, superconductors, and as a phosphor in color television tubes and LED lights. In nature, yttrium is usually found in combination with other elements, such as lanthanides and zirconium. It is not found in its pure form due to its reactivity, but it can be extracted through various chemical processes. Yttrium plays a significant role in modern technology and materials science.