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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. | ||
| One of the ] in period 8, diatomic Argon makes up about 1% of the ]'s ]. It is used in lighting as it will not react with the filament in a ] even under high temperatures, and other cases where ] is an unsuitable (semi-)inert gas. | |||
Revision as of 22:48, 10 September 2001
An chemical element, in the periodic table Argon has the symbol Ar and atom number 18.
One of the noble gases 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.