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Good articleKrypton has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it.
Article milestones
March 22, 2007Good article nomineeListed
April 12, 2007Featured article candidateNot promoted
August 31, 2007Good article reassessmentKept
August 6, 2008Featured topic candidatePromoted
January 31, 2023Good article reassessmentKept
February 3, 2023Featured topic removal candidateDemoted
Current status: Good article
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WikiProject iconKrypton has been listed as a level-4 vital article in Science (Physics). If you can improve it, please do.
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WikiProject iconThis article is supported by WikiProject Elements, which gives a central approach to the chemical elements and their isotopes on Wikipedia. Please participate by editing this article, or visit the project page for more details.
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Hi — Preceding unsigned comment added by 2409:4071:E06:F06B:4A26:DE4C:841F:5D5C (talk) 14:31, 7 February 2022 (UTC)Reply[reply]

External links modified[edit]

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Earth has retained all of the noble gases that were present at its formation except helium.[edit]

According to the helium article there is more helium in the atmosphere than krypton. Why the inconsistency? Gjxj (talk) 21:20, 11 December 2020 (UTC)Reply[reply]

That's not a mistake. The helium in the atmosphere is not the helium that was present at the Earth's formation, but is pretty much all produced by radioactive decay. Get a uranium-bearing rock, the U shoots out alphas, those grab electrons and become helium atoms. Over a long time scale they eventually diffuse out and into the atmosphere because He atoms are so small. Although once it's there we again start losing it because it's too light to hold on to, so we basically just have an equilibrium amount. We have enough U and Th in the earth that the He produced this way that leaks into the atmosphere is enough to be more than the small amounts of Kr and Xe we have. But we have more Ne and Ar than He. Double sharp (talk) 14:31, 14 March 2021 (UTC)Reply[reply]

Error in the Chemistry section[edit]


As I cannot edit this article myself, I decided to make a note of an error I noticed. In the Chemistry section, there is a reaction formula which goes as follows: 2KFr -> 2Kr + F2 Now on the left we see some Potassium Francium compound, which should be 2KrF, a Krypton Fluorine compound. — Preceding unsigned comment added by TheFrunk (talkcontribs) 21:00, 14 March 2022 (UTC)Reply[reply]

Good catch, fixed it. ComplexRational (talk) 01:29, 15 March 2022 (UTC)Reply[reply]