Argon belongs to the family of inert, rare gases
of the atmosphere. It is plentiful compared to
the other rare atmospheric gases; I million ft3
(28 300 m3) of dry air contains 9340 ft3 (264
m3
) of argon. Argon is colorless, odorless,
tasteless, and nontoxic. It is extremely inert and
forms no known chemical compounds. It is
slightly soluble in water.
