Difference between revisions of "Argon"

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== Description ==
 
== Description ==
  
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An inert, colorless, odorless, gaseous element. Argon has an abundance of 0.935% in the earth's atmosphere. It was discovered in 1894 by Lord Rayleigh and Sir William Ramsay. Argon is inert but will form compounds with highly electronegative elements such as [http://cameo.mfa.org/materials/fullrecord.asp?name=oxygen oxygen] and [http://cameo.mfa.org/materials/fullrecord.asp?name=fluorine fluorine]. It is used as a filler in [http://cameo.mfa.org/materials/fullrecord.asp?name=incandescent%20lamp incandescent] lightbulbs and [http://cameo.mfa.org/materials/fullrecord.asp?name=electrical%20discharge%20lamp neon-type] bulbs where it produces a purple fluorescence. Argon is also used in some [http://cameo.mfa.org/materials/fullrecord.asp?name=laser lasers].
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An inert, colorless, odorless, gaseous element. Argon has an abundance of 0.935% in the earth's atmosphere. It was discovered in 1894 by Lord Rayleigh and Sir William Ramsay. Argon is inert but will form compounds with highly electronegative elements such as [[oxygen|oxygen]] and [[fluorine|fluorine]]. It is used as a filler in [[incandescent%20lamp|incandescent]] lightbulbs and [[electrical%20discharge%20lamp|neon-type]] bulbs where it produces a purple fluorescence. Argon is also used in some [[laser|lasers]].
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
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Ar; argo (It.); argônio (Port. Brazil); árgon (Port.); argón (Esp.); Argon (Ces., Dan., Deut., Fr., It., Ned., Pol., Slov., Sven.)
 
Ar; argo (It.); argônio (Port. Brazil); árgon (Port.); argón (Esp.); Argon (Ces., Dan., Deut., Fr., It., Ned., Pol., Slov., Sven.)
  
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== Other Properties ==
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== Risks ==
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* Can act as an asphyxiant by displacing air. 
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* Airgas: [https://www.airgas.com/msds/001004.pdf SDS]
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== Physical and Chemical Properties ==
  
 
Emits purple light when an electric current is passed through.
 
Emits purple light when an electric current is passed through.
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|-
 
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! scope="row"| Melting Point
 
! scope="row"| Melting Point
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| -189.3
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| -189.3 C
 
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|-
 
! scope="row"| Molecular Weight
 
! scope="row"| Molecular Weight
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|-
 
|-
 
! scope="row"| Boiling Point
 
! scope="row"| Boiling Point
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| -185.7
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| -185.7 C
 
|}
 
|}
  
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== Hazards and Safety ==
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==Resources and Citations==
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Can act as an asphyxiant by displacing air. 
 
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[http://www.cdc.gov/niosh/ipcsneng/neng0154.html International Chemical Safety Card]
 
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== Additional Information ==
 
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Web Elements: [http://www.webelements.com/webelements/elements/text/Ar/key.html Website]
 
  
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== Authority ==
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* Web Elements: [http://www.webelements.com/webelements/elements/text/Ar/key.html Website]
  
 
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
 
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
 
* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
  
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* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Argon (Accessed Mar. 20, 2006) -for non-English terms
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* Wikipedia: http://en.wikipedia.org/wiki/Argon (Accessed Mar. 20, 2006) -for non-English terms
  
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971

Latest revision as of 08:29, 28 April 2022

Description

An inert, colorless, odorless, gaseous element. Argon has an abundance of 0.935% in the earth's atmosphere. It was discovered in 1894 by Lord Rayleigh and Sir William Ramsay. Argon is inert but will form compounds with highly electronegative elements such as Oxygen and Fluorine. It is used as a filler in incandescent lightbulbs and neon-type bulbs where it produces a purple fluorescence. Argon is also used in some lasers.

Synonyms and Related Terms

Ar; argo (It.); argônio (Port. Brazil); árgon (Port.); argón (Esp.); Argon (Ces., Dan., Deut., Fr., It., Ned., Pol., Slov., Sven.)

Risks

  • Can act as an asphyxiant by displacing air.
  • Airgas: SDS

Physical and Chemical Properties

Emits purple light when an electric current is passed through.

Composition Ar (atomic no. 18)
CAS 7440-37-1
Melting Point -189.3 C
Molecular Weight atomic wt = 39.948
Boiling Point -185.7 C

Resources and Citations

  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Chemical & Engineering News, American Chemical Society, Washington DC, 81 (36) , Sept. 8, 2003
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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