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| An ], in the ] Argon has the symbol Ar and atom number 18. | An ], in the ] Argon has the symbol Ar and atom number 18. | ||
Revision as of 01:17, 14 September 2002
An chemical element, in the periodic table Argon has the symbol Ar and atom number 18.
The third noble gas, in period 8, diatomic Argon makes up about 1% of the Earth's atmosphere. It is used in lighting as it will not react with the filament in a lightbulb even under high temperatures, and other cases where Nitrogen is an unsuitable (semi-)inert gas.
Used in technical SCUBA diving to inflate the drysuit, due to its nonreactive, heat isolating effect.
External Link:
Los Alamos National Laboratory's Chemistry Division: Periodic Table - Argon
See: Periodic Table