Radon: Difference between revisions
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Revision as of 22:02, 10 May 2010
Radon is a chemical element, having the chemical symbol Rn.
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Its atomic number (the number of protons) is 86. It has a Standard Atomic Weight of 222, and is typically found as a gas in its elemental form.
Radon is considered to be a member of the "Noble gas" class of elements, has a boiling point of −61.7 °C, and a melting point of −71 °C.