Radium: Difference between revisions
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Revision as of 22:34, 10 May 2010
Radium is a chemical element, having the chemical symbol Ra.
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Its atomic number (the number of protons) is 88. It has a Standard Atomic Weight of 226, and is typically found as a solid in its elemental form.
Radium is considered to be a member of the "Alkaline Earth Metal" class of elements, has a boiling point of 1,737 °C, and a melting point of 700 °C.