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Krypton is used in different forms for many applications in the medical industry. Krypton lasers are commonly employed for laser eye surgery. The laser is used to help prevent blood clotting in the eye as surgery is performed.
List of Elements in the Noble Gas Group. 1  Krypton (Kr, atomic number 36) is a dense, colorless, inert gas. It's used in lasers and lamps. 2  Xenon (Xe, atomic number 54) in nature consists of a mix of stable isotopes.