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atomic number 86
Noun
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
synonym
radon
Rn
hypernym
argonon
inert gas
noble gas
atomic number 86 vs Rn
atomic number 86 vs argonon
atomic number 86 vs inert gas
atomic number 86 vs noble gas
atomic number 86 vs radon
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