Krypton (from Very old Greek: ‘the hidden one’) is a chemical element with the symbol Kr and atomic number 36. It is a clear/white, odorless, (having no taste/rude and offensive) noble gas that happens in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. With rare exceptions, krypton is chemically not moving/powerless.
Krypton, like the other noble gases, is used in lighting and photography. Krypton light has many (related to ghosts or the colors of the rainbow) lines, and krypton plasma is useful in bright, high-powered gas lasers (krypton ion and excimer lasers), each of which (shakes from a loud sound/makes a person feel strongly about something) and increases a single (related to ghosts or the colors of the rainbow) line. Krypton fluoride also makes a useful laser medium. From 1960 to 1983, the official length of a meter was defined by the 606-nanometer wavelength of the orange (related to ghosts or the colors of the rainbow) line of krypton-86, because of the high power and relative ease of operation of krypton (release or flow of electricity) tubes.
Krypton was discovered in Britain in 1898 by William Ramsay, a Scottish chemist, and Morris Travers, an English chemist, in residue left from disappearing nearly all parts/pieces of liquid air. Neon was discovered by an almost the same procedure by the same workers just a few weeks later. William Ramsay was awarded the 1904 Nobel Prize in Chemistry for discovery of a series of noble gases, including krypton.
In 1960, the International Bureau of Weights and Measures defined the meter as 1,650,763.73 wavelengths of light gave off/given off by the krypton-86 isotope. This agreement replaced the 1889 international early model-related meter, which was a metal bar located in Sevres. This also made no longer useful the 1927 definition of the Ã¥ngstrÃ¶m based on the red cadmium (related to ghosts or the colors of the rainbow) line, replacing it with 1 Ã… = 10a’10 m. The krypton-86 definition lasted until the October 1983 (meeting to discuss things/meeting together), which redefined the meter as the distance that light travels in vacuum during 1/299,792,458 s.
Krypton is seen as (more than two, but not a lot of) sharp emission lines ((related to ghosts or the colors of the rainbow) signatures) the strongest being green and yellow. Krypton is one of the products of uranium fission. Solid krypton is white and has a face-centered cubic crystal structure, which is a common property of all noble gases (except helium, which has a six-sided close-packed crystal structure).
Naturally happening krypton in Earth’s atmosphere is composed of five stable isotopes, plus one isotope (78Kr) with such a long half-life (9.2Ã–1021 years) that it can be thought about/believed stable. (This isotope has the second-longest known half-life among all isotopes for which (rotted, inferior, or ruined state) has been watched/followed; it goes through double electron take and hold (to prevent release) to 78Se). Also, about thirty unstable isotopes and isomers are known. Traces of 81Kr, a cosmogenic nuclide produced by the (universe-related) ray exposure to radiation of 80Kr, also happen in nature: this isotope is radioactive with a half-life of 230,000 years. Krypton is highly dangerous and unstable and does not stay in solution in near-surface water, but 81Kr has been used for dating old (50,000-800,000 years) (underground water that supplies wells).
85Kr is a not moving/powerless radioactive noble gas with a half-life of 10.76 years. It is produced by the fission of uranium and plutonium, such as in nuclear bomb testing and nuclear reactors. 85Kr is released during the reprocessing of fuel rods from nuclear reactors. Concentrations at the North Pole are 30% higher than at the South Pole due to (related to heat transfer by hot air movement) mixing.