Chemical Elements History and Information Argon

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About the chemical element Argon, its symbol, atomic number and weight, who discovered it and when.

The Atomic Elements and Their Uses

(Element) (Symbol) (Atomic number) (Atomic weight)

Argon Ar 18 39.948

Discovered by the team of Lord Rayleigh (John William Strutt) and Sir William Ramsay of England in 1894. Argon creates the blue color in a neon sign. It is used in certain kinds of light bulbs to prolong the life of the filament, and it is also used as a gas shield for arc welding and smelting.


© 1975 - 1981 by David Wallechinsky & Irving Wallace
Reproduced with permission from "The People's Almanac" series of books.
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