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radium.asc
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1992-10-03
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495b
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15 lines
RADIUM
Atomic symbol - Ra
Atomic weight - (226.0254)
Atomic number - 88
Electron configuration - 2-8-18-32-18-8-2
Oxidation states - +2
State of matter - solid
Light metal
Discovered in 1898 by Pierre and Marie Curie and assistant G. Bémont
Boils at approx. 1737 °C, melts at approx. 700 °C
Notes:
Radium is used in cancer therapy and luminescent paint. Concentrated radium
glows in the dark and gives off heat. It has a silvery white color.