Discovery of Radon
Radon, atomic number 86, has a mass of 222 au.
Radon is a noble gas and it is a radioactive element.
Radon was first observed or predicted in 1899 by E. Rutherford and R. B. Owens and first isolated in 1910 by W. Ramsay and R. Whytlaw-Gray.
|Periodic Table, What is it showing?||
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