Zirconium is a chemical element with the symbol Zr and atomic number 40. It is a shiny, gray-white metal that is highly resistant to corrosion and heat. Found primarily in the mineral zircon, zirconium is often used in various industrial applications, including nuclear reactors, where its low neutron-capturing ability is beneficial. In addition to its use in nuclear technology, zirconium is also utilized in the production of ceramics, dental materials, and various alloys. Its durability and resistance to chemical reactions make it an important material in many fields, including aerospace and medical devices.