krypton
Sign in to saveKrypton (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.
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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.
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Article
11 sectionsContents
- History
- Characteristics
- Isotopes
- Chemistry
- Natural occurrence
- Applications
- Precautions
- See also
- References
- Further reading
- External links
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.
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.