Question

Who discoverd radon inert gas

Answer 1

Radon gas was discovered by Friedrich Ernst Dorn.

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Answer 2

Radon was the fifth radioactive element to be discovered, in 1899 by Ernest Rutherford and Robert B. Owens, after uranium, thorium, radium and polonium. In 1900 Friedrich Ernst Dorn reported some experiments in which he noticed that radium compounds emanate a radioactive gas he named 'Radium Emanation' ('Ra Em').