Xenon
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Xenon is a chemical element; it has symbol Xe and atomic number 54. It is a dense, colorless, odorless noble gas found in Earth's atmosphere in trace amounts. Although generally unreactive, it can und
A xenon-filled discharge tube glowing light blue
An acrylic cube specially prepared for element collectors containing a glass ampoule of liquefied xenon
A layer of solid xenon building inside a high voltage apparatus. The layer of solid xenon (white color) is surrounded by liquid xenon (transparent).
Liquid (featureless) and crystalline solid Xe nanoparticles produced by implanting Xe+ ions into aluminium at room temperature
Radon
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Radon is a chemical element; it has symbol Rn and atomic number 86. It is a radioactive noble gas and is colorless and odorless. Of the three naturally occurring radon isotopes, only 222Rn has a suffi
Xenon
…xenon-containing salts. Since then, many other xenon compounds have been discovered, in addition to some compounds of the noble gases argon, krypton, and radon, including argon fluorohydride (HArF), krypton difluoride (KrF2), and radon fluoride. By 1971, more than 80 xenon compounds were known. In November…
A tube of radon gas, glowing due to a phosphorescent zinc sulfide background behind it.
Radon in a cloud chamber. The ionizing radiation of radon causes condensation to appear as cloud tracks in the chamber.
A fixed-location device to measure soil concentrations of radon at the Warsaw University of Technology
222Rn- and 125I-containing seeds used in brachytherapy