A
chemical element, in the
periodic table Krypton has the symbol Kr and atom number 36. It is one of the so-called
noble gases, and was discovered by fractionating liquefied air. The name
Krypton is from a Greek word meaning "hidden".
It is one of the products of Uranium fission.
In fiction,
Krypton is the name of the exploded birth planet of
Superman.
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