Krypton is a colorless, odorless gas that belongs to the noble gases group in the periodic table. It has the chemical symbol Kr and atomic number 36. Krypton is found in trace amounts in the Earth's atmosphere and is produced in small quantities during the process of nuclear reactions. It is known for its use in high-performance lighting, such as Krypton headlights and Krypton flash lamps. Krypton is non-reactive, meaning it does not easily form compounds with other elements. This property makes it useful in various applications, including Krypton lasers and as an inert gas in certain types of photography. Its unique characteristics also make it valuable in scientific research and industrial processes.