Argon: Difference between revisions
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'''Argon''' (symbol, ''Ar'') is a [[chemical element]] with atomic number 18. It is an inert gas of the eighteenth group of the [[modern periodic table]]. It is present in a small quantity in the earth's atmosphere. It owes its non-reactivity mainly to its completely filled outermost shell. | '''Argon''' (symbol, '''Ar''') is a [[chemical element]] with atomic number 18. It is an inert gas of the eighteenth group of the [[modern periodic table]]. It is present in a small quantity in the earth's atmosphere. It owes its non-reactivity mainly to its completely filled outermost shell. | ||
Revision as of 08:09, 8 April 2008
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Argon (symbol, Ar) is a chemical element with atomic number 18. It is an inert gas of the eighteenth group of the modern periodic table. It is present in a small quantity in the earth's atmosphere. It owes its non-reactivity mainly to its completely filled outermost shell.