‘Rn’ is chemical symbol of which element?

Q. ‘Rn’ is chemical symbol of which element?
Answer: Radon
Notes: Rn is the symbol of Radon, a radioactive, colorless, odorless, tasteless noble gas. Radon itself is the immediate decay product of radium. Its most stable isotope, 222Rn, has a half-life of only 3.8 days, making radon one of the rarest elements since it decays away so quickly.

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