  No. Radon is a colorless, radioactive, inert gaseous element formed by the radioactive decay of radium. It is used as a radiation source in radiotherapy and to produce … neutrons for research. Its most stable isotope is Rn 222 with a half-life of 3.82 days.onfidence votes 83.3K. No. Radon is an inert gas. It doesn't want to hook up with other atoms and loan or borrow electrons. It just doesn't want to burn, and combustion is a chemical reaction.