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Radon  

  • Discovered in 1900 by Friedrich Ernst Dorn

  • Atomic Radii:  120 pm 

  • Melting Point: âˆ’71°C

  • Boiling Point: âˆ’61.7°C

 

Applications:

-useful in cancer therapy; some hospitals to treat tumours by sealing the gas in minute tubes, and implanting these into the tumour

-earthquake prediction

-groundwater tracer 

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