krypton

Also known as Kr, element 36, 36Kr

Krypton (from ) is a chemical element; it has symbol Kr and atomic number 36. It is a colorless, odorless noble gas that occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Krypton is chemically inert.

AI overview

Krypton is a colorless, odorless gas that makes up a tiny fraction of Earth's atmosphere and belongs to a group of elements called noble gases that don't readily react with other substances. It's commonly used in fluorescent lamps, often mixed with other rare gases to produce light.

AI-generated from the Wikipedia summary — may contain errors.

Chemical data

Formula: Kr
Molecular weight: 83.8 g/mol
IUPAC name: krypton
SMILES: [Kr]
InChIKey: DNNSSWSSYDEUBZ-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

3,040 papers

Krypton-81m.Progress in nuclear medicine · 1978Goris M, Daspit S
Krypton-derivatization highlights O(2)-channeling in a four-electron reducing oxidase.Chemical communications (Cambridge, England) · 2020Engilberge S, Wagner T, Carpentier P et al.DOI: 10.1039/d0cc04557h
HEART.ReviewAnnual review of physiology · 1964BERNE RM, LEVY MNDOI: 10.1146/annurev.ph.26.030164.001101
A krypton-83m generator.The International journal of applied radiation and isotopes · 1971Moghissi AA, Hupf HBDOI: 10.1016/0020-708x(71)90130-x
Validation of krypton as a new tracer gas for the standardization tests of collective and individual protection systems.Annals of work exposures and health · 2024Cabaset E, Marchal M, Santandrea A et al.DOI: 10.1093/annweh/wxad071
Deep-mantle krypton reveals Earth's early accretion of carbonaceous matter.Nature · 2021Péron S, Mukhopadhyay S, Kurz MD et al.DOI: 10.1038/s41586-021-04092-z
[The pharmacology of the rare gases (helium, neon, argon, krypton, xenon)].ReviewActualites pharmacologiques · 1974Featherstone RM, Settle W
The krypton thunderbolt.Hospital practice · 1976Commoner BDOI: 10.1080/21548331.1976.11707001

via PubMed

Wikidata facts

Mass: 83.798
Image: KrTube.jpg

Show 11 more facts

electronegativity: 3
element symbol: Kr
Commons category: Krypton
atomic number: 36
Commons gallery: Krypton
chemical formula: Kr
canonical SMILES: [Kr]
time of discovery or invention: 1898-00-00
standard molar entropy: 164
Unicode character: 氪
electron configuration: [Ar] 3d¹⁰ 4s² 4p⁶

Sources (7)

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Article

11 sections

Contents

History
Characteristics
Isotopes
Chemistry
Natural occurrence
Applications
Precautions
See also
References
Further reading
External links

Krypton, like the other noble gases, is used in lighting and photography. Krypton light has many spectral lines, and krypton plasma is useful in bright, high-powered gas lasers (krypton ion and excimer lasers), each of which resonates and amplifies a single spectral line. Krypton fluoride also makes a useful laser medium. From 1960 to 1983, the official definition of the metre was based on the wavelength of one spectral line of krypton-86, because of the high power and relative ease of operation of krypton discharge tubes.