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argon    音标拼音: ['ɑrg,ɑn]
n. 氩

氩

argon
n 1: a colorless and odorless inert gas; one of the six inert
gases; comprises approximately 1% of the earth's atmosphere
[synonym: {argon}, {Ar}, {atomic number 18}]

Noble \No"ble\, a. [Compar. {Nobler}; superl. {Noblest}.] [F.
noble, fr. L. nobilis that can be or is known, well known,
famous, highborn, noble, fr. noscere to know. See {know}.]
1. Possessing eminence, elevation, dignity, etc.; above
whatever is low, mean, degrading, or dishonorable;
magnanimous; as, a noble nature or action; a noble heart.
[1913 Webster]

Statues, with winding ivy crowned, belong
To nobler poets for a nobler song. --Dryden.
[1913 Webster]

2. Grand; stately; magnificent; splendid; as, a noble
edifice.
[1913 Webster]

3. Of exalted rank; of or pertaining to the nobility;
distinguished from the masses by birth, station, or title;
highborn; as, noble blood; a noble personage.
[1913 Webster]

Note: Noble is used in the formation of self-explaining
compounds; as, noble-born, noble-hearted, noble-minded.
[1913 Webster]

{Noble gas} (Chem.), a gaseous element belonging to group
VIII of the periodic table of elements, not combining with
other elements under normal reaction conditions;
specifically, {helium}, {neon}, {argon}, {krypton},
{xenon}, or {radon}; also called {inert gas}.

{Noble metals} (Chem.), silver, gold, and platinum; -- so
called from their resistance to oxidation by air and to
dissolution by acids. Copper, mercury, aluminium,
palladium, rhodium, iridium, and osmium are sometimes
included.
[1913 Webster]

Syn: Honorable; worthy; dignified; elevated; exalted;
superior; sublime; great; eminent; illustrious;
renowned; stately; splendid; magnificent; grand;
magnanimous; generous; liberal; free.
[1913 Webster]


Argon \Ar"gon\, n. [NL., fr. Gr. ?, neut. of ? inactive; ? priv.
? work.] (Chem.)
A colorless, odorless gas occurring in the air (of which it
constitutes 0.93 per cent by volume), in volcanic gases,
etc.; -- so named on account of its inertness by Rayleigh and
Ramsay, who prepared and examined it in 1894-95. Symbol, A;
at. wt., 39.9. Argon is condensible to a colorless liquid
boiling at -186.1[deg] C. and to a solid melting at
-189.6[deg] C. It has a characteristic spectrum. No compounds
of it are known, but there is physical evidence that its
molecule is monatomic. Weight of one liter at 0[deg] C. and
760 mm., 1.7828 g.
[Webster 1913 Suppl.]


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  • Argon - Wikipedia
    Argon is a chemical element; it has symbol Ar and atomic number 18 It is in group 18 of the periodic table and is a noble gas [10] Argon is the third most abundant gas in Earth's atmosphere, at 0 934% (9340 ppmv) It is more than twice as abundant as water vapor (which averages about 4000 ppmv, but varies greatly), 23 times as abundant as carbon dioxide (400 ppmv), and more than 500 times as
  • Argon | Properties, Uses, Atomic Number, Facts | Britannica
    Argon is a chemical element, an inert gas of Group 18 (noble gases) of the periodic table It is terrestrially the most abundant and industrially the most frequently used of the noble gases It is used in gas-filled electric light bulbs, radio tubes, and Geiger counters
  • Argon Definition, Facts, Symbol, Discovery, Property, Uses
    Argon (pronunciation: AR-gon) is a colorless, odorless, inert element belonging to the group of inert gases in the periodic table and is represented by the chemical symbol Ar [1, 2, 3]
  • Wasilla, AK — Central Welding Supply
    Wasilla Specialties: Industrial Gases and Welding Mixes, Medical Gases, Beverage Gases, Safety Products, Welding Supplies
  • Welding Supply in Anchorage, AK - Airgas Store
    Argon, oxygen, acetylene, nitrogen, carbon dioxide plus specialty and medical gases Ammonia products and process chemicals Gas regulators, plasma cutting equipment and consumables Welding supplies and machines for MIG, TIG and stick welding applications, MIG guns and TIG torches Welding and cutting tips, welding wire and filler metal
  • Argon - Element information, properties and uses | Periodic Table
    Argon makes up 0 94% of the Earth’s atmosphere and is the third most abundant atmospheric gas Levels have gradually increased since the Earth was formed because radioactive potassium-40 turns into argon as it decays
  • Five Major Uses Of Argon - Sciencing
    Five Major Uses of Argon Argon is an inert (or “noble”) gas and is listed in the periodic table as "Ar " This noble gas was discovered in 1894 by Sir William Ramsay and Lord Rayleigh Argon is manufactured by distilling the liquid air and is one of the most abundant gases (third most abundant) in the earth’s atmosphere Argon is therefore inexpensive and environmentally friendly It has
  • Argon compounds - Wikipedia
    Argon compounds, the chemical compounds that contain the element argon, are rarely encountered due to the inertness of the argon atom However, compounds of argon have been detected in inert gas matrix isolation, cold gases, and plasmas, and molecular ions containing argon have been made and also detected in space
  • Welding Supply in Wasilla, AK - Airgas Store
    Argon, oxygen, acetylene, nitrogen, carbon dioxide plus specialty and medical gases Ammonia products and process chemicals Gas regulators, plasma cutting equipment and consumables Welding supplies and machines for MIG, TIG and stick welding applications, MIG guns and TIG torches Welding and cutting tips, welding wire and filler metal
  • Properties and uses of argon | Britannica
    For the full article, see argon argon Properties of argon argon, Chemical element, chemical symbol Ar, atomic number 18 Colourless, odourless, and tasteless, it is the most abundant of the noble gas es on Earth and the one most used in industry It constitutes about 1% of air and is obtained by distillation of liquid air





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