A radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health. Synonyms: atomic number 86, radon.
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"Rn" Quotes from Famous Books ![]() ![]() — Mr. Dooley's Philosophy • Finley Peter Dunne ![]() ![]() — Dictionary English-Spanish-Tagalog • Sofronio G. Calderon |
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