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  2. Noble gas compound - Wikipedia

    en.wikipedia.org/wiki/Noble_gas_compound

    From the standpoint of chemistry, the noble gases may be divided into two groups: [citation needed] the relatively reactive krypton (ionisation energy 14.0 eV), xenon (12.1 eV), and radon (10.7 eV) on one side, and the very unreactive argon (15.8 eV), neon (21.6 eV), and helium (24.6 eV) on the other.

  3. Noble gas (data page) - Wikipedia

    en.wikipedia.org/wiki/Noble_gas_(data_page)

    Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... Argon Krypton Xenon Radon Oganesson; Solar System (for each atom of silicon) [20 ...

  4. Argon - Wikipedia

    en.wikipedia.org/wiki/Argon

    Argon is the cheapest alternative when nitrogen is not sufficiently inert. Argon has low thermal conductivity. Argon has electronic properties (ionization and/or the emission spectrum) desirable for some applications. Other noble gases would be equally suitable for most of these applications, but argon is by far the cheapest.

  5. Noble gas - Wikipedia

    en.wikipedia.org/wiki/Noble_gas

    For instance, argon, krypton, and xenon form clathrates with hydroquinone, but helium and neon do not because they are too small or insufficiently polarizable to be retained. [61] Neon, argon, krypton, and xenon also form clathrate hydrates, where the noble gas is trapped in ice. [62] An endohedral fullerene compound containing a noble gas atom

  6. Window insulation - Wikipedia

    en.wikipedia.org/wiki/Window_insulation

    Most windows use argon (which is cheaper), but krypton is a better choice of insulation when the distance between the panes has to be smaller (the distance has to be about 13 mm (1 ⁄ 2 inch) for argon, and about 9 mm (3 ⁄ 8 inch) for krypton; increasing or decreasing the space will degrade performance).

  7. Ramsauer–Townsend effect - Wikipedia

    en.wikipedia.org/wiki/Ramsauer–Townsend_effect

    However, Ramsauer and Townsend, independently observed [2] [3] that for slow-moving electrons in argon, krypton, or xenon, the probability of collision between the electrons and gas atoms obtains a minimum value for electrons with a certain amount of kinetic energy (about 1 electron volts for xenon gas [4]).

  8. Hall-effect thruster - Wikipedia

    en.wikipedia.org/wiki/Hall-effect_thruster

    SpaceX developed a new thruster that used argon as propellant for their Starlink V2 mini. The new thruster had 2.4 times the thrust and 1.5 times the specific impulse as SpaceX's previous thruster that used krypton. [13] Argon is approximately 100 times less expensive than Krypton and 1000 times less expensive than Xenon. [24]

  9. Inert gas - Wikipedia

    en.wikipedia.org/wiki/Inert_gas

    The more carbon dioxide that is added to the inert gas, such as argon, will increase penetration. The amount of carbon dioxide is often determined by what kind of transfer is used in GMAW. The most common is spray arc transfer, and the most commonly used gas mixture for spray arc transfer is 90% argon and 10% carbon dioxide.