Difference between revisions of "Argon"
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Latest revision as of 20:58, 12 July 2016
|Atomic mass||39.9 amu|
|Date of discovery||1894|
|Name of discoverer||Sir William Ramsey|
|Name origin||From the Greek argon.|
Argon (Ar) is the most common of the noble gases. It is an inert component which comprises 0.934% of the Earth's atmosphere. It is a common shielding agent in welding or melting of metal, preventing reaction and subsequent oxidation of the hot metal with atmospheric air.
- The New American Desk Encyclopedia, Penguin Group, 1989
|Periodic Table of the Elements|