Search results
Results From The WOW.Com Content Network
Krypton is used in some photographic flashes for high speed photography. Krypton gas is also combined with mercury to make luminous signs that glow with a bright greenish-blue light. [39] Krypton is mixed with argon in energy efficient fluorescent lamps, reducing the power consumption, but also reducing the light output and raising the cost. [40]
Krypton-81 is useful in determining how old the water beneath the ground is. [10] Radioactive krypton-81 is the product of spallation reactions with cosmic rays striking gases present in the Earth atmosphere, along with the six stable or nearly stable krypton isotopes. [11] Krypton-81 has a half-life of about 229,000 years.
Main isotopes of krypton; Main isotopes [1] Decay; abundance ... Phase at STP: Oxidation states ... normal-code dm1−4 en-name en-link
Atomic number (Z): 36: Group: group 18 (noble gases) Period: period 4: Block p-block Electron configuration [] 3d 10 4s 2 4pElectrons per shell: 2, 8, 18, 8: Physical properties; Phase at STP
The noble gases—including helium—can form stable molecular ions in the gas phase. The simplest is the helium hydride molecular ion , HeH + , discovered in 1925. [ 59 ] Because it is composed of the two most abundant elements in the universe, hydrogen and helium, it was believed to occur naturally in the interstellar medium , and it was ...
By additional fractional distillation, the liquid oxygen may be enriched to contain 0.1–0.2% of a krypton/xenon mixture, which is extracted either by adsorption onto silica gel or by distillation. Finally, the krypton/xenon mixture may be separated into krypton and xenon by further distillation. [65] [66]
The speed of sound in any chemical element in the fluid phase has one temperature ... 36 Kr krypton (gas) use: 221: 20 °C ... and "for normal atmospheric pressure ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more