Difference between revisions of "Argon"

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{{Element | name=Argon | symbol=Ar | anumber=18 | amass=39.9 amu | noe=18 | class=Non-metal | cstructure=Cubic | color=Colorless gas | date=1894 | discname=[[Sir William Ramsey]] | origname=From the Greek ''argon''. | uses=Lighting | obtained=Air }}
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'''Argon''' ('''Ar''') is the most common of the [[noble gas]]es. It is an inert component which comprises 0.934% of the Earth's [[atmosphere]].<ref>The New American Desk Encyclopedia, Penguin Group, 1989</ref>  It is a common shielding agent in welding or melting of metal, preventing reaction and subsequent oxidation of the hot metal with atmospheric air.
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==References==
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<references />
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[[Category:Elements]]
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Revision as of 09:31, 13 September 2011

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