Argon, Ar, is a Nobel Gas element, found in
Group 0 of the periodic table.
Its atomic number is 18, and its relative atomic mass is 39.95.
- Atomic Number : 18
- Relative Atomic Mass : 39.95
Argon, Ar, was isolated by Sir William Ramsey in 1894AD from air,
from which the major components (i.e. Oxygen, Nitrogen, Carbon
Dioxide, and Water Vapour) had been removed.
Argon is present in the atmosphere, and accounts for 0.94% of
Argon, Ar, is extracted from liquefied air by fractional distillation.
- Argon is a colourless, tasteless, odourless, inert gas.
- Argon is very inert chemically due to its electronic configuration.
- Argon can exist in charged ion molecules (e.g. ArKr+) which have
been observed spectroscopically.
Actinium is used as a source of Neutrons.
Argon is used primarily for electrical uses :
- in discharge tubes used for advertising purposes,
- as a filler gas in electric lamps, and
- to create a plasma in argon arc welding.
Detection and Analysis
Argon is detected by spectroscopic methods.
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