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Krypton-85 is formed naturally via the action of cosmic rays on stable Kryption-84, but nowadays most is produced artificially as a byproduct of nuclear fission of uranium-235, but even then only 3 in a thousand fission products are Krypton.
Wiki User
∙ 11y ago
Krypton-85 is a radioactive isotope of krypton. It is not found naturally in significant quantities but is produced through nuclear fission reactions in nuclear power plants, as well as during the reprocessing of nuclear fuel and the detonation of nuclear weapons. So, it is considered a synthetic isotope.
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