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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]
  • Argon - Element information, properties and uses | Periodic Table
    Element Argon (Ar), Group 18, Atomic Number 18, p-block, Mass 39 95 Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
  • Central Welding Supply
    Family owned and operated distributor of Industrial, Medical, Specialty, Food Grade and Bulk Gases Safety Supplies, Welding Equipment, Rental, and Repair
  • Argon | Ar | CID 23968 - PubChem
    Argon appears as a colorless odorless noncombustible gas Heavier than air and can asphyxiate by displacement of air Exposure of the container to prolonged heat or fire can cause it to rupture violently and rocket If liquefied, contact of the very cold liquid with water may cause violent boiling If the water is hot, there is the possibility that a liquid "superheat" explosion may occur
  • Argon Element | Uses, Facts, Physical Chemical Characteristics
    Argon is a rare and inert gas and belong to the Nobel gases It was discovered by Sir William Ramsay and Lord Rayleigh in 1894 Click for more
  • 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 - Center for Science Education
    Argon is the most abundant noble gas; the others—helium, neon, krypton, xenon, and radon—are present in the air in even smaller amounts Argon has 18 protons in its nucleus and is therefore denoted by atomic number 18 on the periodic table Argon makes up a little less than 1% of Earth’s atmosphere by volume UCAR Center for Science Education
  • Argon: Element Properties and Uses - samaterials. com
    Argon is a colorless, odorless, and inert gas that belongs to the noble gases group in the periodic table It is commonly found in the Earth's atmosphere in trace amounts





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