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Radium

2:22

Radium - Periodic Table of Videos

1:55

What is RADIUM?

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Radium Was a Miracle Product, Until it Started Killing People

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Element Project-Radium

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दुनिया का सबसे खतरनाक एलिमेंट (Uranium 235)

Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222). When radium decays, ionizing radiation is a product, which can excite fluorescent chemicals and cause radioluminescence.
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  • Bulk properties 

  • Isotopes 

  • Chemistry 

  • Occurrence 

  • History 

  • Production 

  • Modern applications 

  • Hazards