What is Radium? State its properties and importance.
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• A soft, shiny and silvery radioactive metal. Radium now has few uses, because it is so highly radioactive. Radium-223 is sometimes used to treat prostate cancer that has spread to the bones. Because bones contain calcium and radium is in the same group as calcium, it can be used to target cancerous bone cells.
• Radium is the heaviest known alkaline earth metal and is the only radioactive member of its group. Its physical and chemical properties most closely resemble its lighter congener barium.
• Radium is a highly reactive metal and always exhibits its group oxidation state. It forms the colorless Ra2+ cation in aqueous solution, which is highly basic and doesn’t form complexes. Most radium compounds are therefore simple ionic compounds.
• Radium oxide: RaO
• Radium Hydroxide: Ra(OH)2
• Radium chloride: RaCl2
• Radium bromide: RaBr2
• Radium Nitrate: Ra(NO3)2
• Radium emits alpha, beta, and gamma rays when mixed with beryllium produces neutrons.
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