Recently, the first argon compound, argon fluorohydride HArF , was reported , which is stable up to 27 K. I'm waiting for hydrogen to be replaced by boron: I think a molecule that spells out "BArF" would be worth investigating. Or not. Krypton is a colorless, odorless, unreactive gas which liquefies at It is found in the Earth's crust at a concentration of 10 ppt, making it the 81st most abundant element; it is found in the atmosphere at a concentration of 1 ppm by volume.
Krypton which is used commercially is extracted from liquid air by fractional distillation. Krypton was discovered in by Sir William Ramsay and his assistant, Morris Travers, in a sample of argon gas extracted from the atmosphere.
The name "krypton" is derived from the Greek word kryptos , meaning "hidden" which has nothing to do with the home planet of Superman. Krypton is used in some "neon" lights, producing a violet color when electricity is passed through it. Radioactive kyrypton is produced in nuclear reactors and nuclear processing plants; monitoring krypton in the atmosphere allowed the United States to monitor how much nuclear material the Soviet Union was using.
Xenon is a colorless, odorless, unreactive gas which liquefies at It is found in the Earth's crust at a concentration of 2 ppt, making it the 83rd most abundant element; it is found in the atmosphere at a concentration of 90 ppb by volume.
Xenon which is used commercially is extracted from liquid air by fractional distillation. Xenon was also discovered by Ramsay and Travers in The name is derived from the Greek word for "stranger," xenos. Xenon lights glow with a blue light, and also emits some low-frequency ultraviolet light. Xenon lights are used in tanning beds, biocidal lamps used in food preparation, car headlights, flash lighting on cameras, strobe lights used in high-speed photography, and has been tested for use in space travel in ion-propulsion engines such as the experimental NASA spacecraft Deep Space 1.
If your favorite molecule is not in our archive , please send an email to motw acs. The molecule can be notable for its current or historical importance or for any quirky reason. Thank you! Find Out More. Careers Launch and grow your career with career services and resources. Communities Find a chemistry community of interest and connect on a local and global level.
Discover Chemistry Explore the interesting world of science with articles, videos and more. Inadvertently, however, the researchers overdid the evaporation, leaving only a heavy gas sample behind, according to Chemicool. Wondering if they might find something anyway, they analyzed the light spectrum of the gases in the sample and found something unknown — a brand-new element.
This new element was not lighter than argon, but heavier. The researchers dubbed this discovery "krypton," from the Greek word for "hidden," kryptos. OK, they don't actually make that sound, but krypton-fluorine lasers are a powerful scientific tool — and they're responsible for at least one Guinness World Record. These lasers can produce a pulse of energy times as strong as the entire U. In July , researchers at the U. Naval Research Laboratory celebrated their entry into the Guinness Book of World Records for using a powerful krypton-fluorine laser to accelerate plastic foils to speeds of 1, kilometers per second more than 2.
The purpose, other than winning world records, is to advance research on nuclear fusion. Krypton has other scientific superpowers as well. Radioactive isotopes of krypton — versions of the atom with differing numbers of neutrons in their nuclei — are produced naturally when cosmic rays from space hit krypton atoms in the atmosphere, said Christo Buizert, a postdoctoral researcher in geology and geophysics at Oregon State University.
We hope that you enjoy your visit to this Site. We welcome your feedback. Data W. Haynes, ed. Version 1. Coursey, D. Schwab, J. Tsai, and R. Dragoset, Atomic Weights and Isotopic Compositions version 4. Periodic Table of Videos , accessed December Podcasts Produced by The Naked Scientists. Download our free Periodic Table app for mobile phones and tablets. Explore all elements. D Dysprosium Dubnium Darmstadtium. E Europium Erbium Einsteinium. F Fluorine Francium Fermium Flerovium.
G Gallium Germanium Gadolinium Gold. I Iron Indium Iodine Iridium. K Krypton. O Oxygen Osmium Oganesson. U Uranium. V Vanadium. X Xenon. Y Yttrium Ytterbium. Z Zinc Zirconium. Membership Become a member Connect with others Supporting individuals Supporting organisations Manage my membership. Facebook Twitter LinkedIn Youtube. Discovery date. Discovered by. Sir William Ramsay and Morris Travers.
Origin of the name. The name is derived from the Greek 'kryptos', meaning hidden. Melting point. Boiling point. Atomic number. Relative atomic mass. Key isotopes. Electron configuration. CAS number. ChemSpider ID. ChemSpider is a free chemical structure database. Electronegativity Pauling scale. Common oxidation states. Atomic mass. Half life. Mode of decay. Relative supply risk.
Crustal abundance ppm. Top 3 producers. Top 3 reserve holders. Political stability of top producer. Political stability of top reserve holder. Young's modulus GPa. Shear modulus GPa. Bulk modulus GPa. Vapour pressure.
Temperature K. Pressure Pa. Listen to Krypton Podcast.
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