Argon: Difference between revisions
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imported>Nachiketa (New page: {{subpages}} {{Elem_Infobox |background1=ffffff |elementColor=ff3333 |elName=Argon |elMass= |elSym=Ar |elNum=18 |eltrnCfg=1''s''<sup>2</sup>2''s''<sup>2</sup>2''p''<sup>6</sup>3''s''<sup>2...) |
imported>David Yamakuchi mNo edit summary |
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|elementColor=ff3333 | |elementColor=ff3333 | ||
|elName=Argon | |elName=Argon | ||
|elMass= | |elMass=39.95 | ||
|elSym=Ar | |elSym=Ar | ||
|elNum=18 | |elNum=18 | ||
Revision as of 01:46, 4 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.