* BASIC FACTS*
Element Name: Argon
Element Symbol: Ar
Atomic Number: 18
Group Name: Noble Gas
colorless and odorless.
*It is very inert and is not known to form true chemical compounds.
*It makes a good atmosphere for working with air-sensitive materials since it is heavier than air and less reactive that Nitrogen.
*Argon is present to a small extent in the Earth's atmosphere and is obtained as a byproduct from the liquefaction and separation of air.
*Its presence in air was suspected by Cavendish in 1785, discovered by Lord Rayleigh and Sir William Ramsay in 1894.
*USES OF ARGON*
* Argon is used in electrical light bulbs, fluorescent tubes, photo tubes, and glow tubes at a pressure of about 3 mm.
*Argon is used as a motionless gas shield for arc welding and cutting.
*Argon can serve as a blanket for the production of titanium and other reactive elements.
*Argon provides a prospective atmosphere for growing silicon and germanium crystals.