Zirconium, represented by the symbol Zr, is a chemical element with the atomic number 40. It is a shiny, gray-white metal that is known for its high resistance to corrosion and heat. Zirconium is primarily found in nature in the mineral zircon, which is used in various applications, including ceramics and as a gemstone. Due to its properties, Zr is widely used in industries such as nuclear energy, where it serves as a cladding material for fuel rods. Additionally, it is utilized in the production of alloys and in dental materials, making it valuable in both industrial and medical fields.