atomic number 86 definition

  • noun:
    • a radioactive gaseous factor formed because of the disintegration of radium; the heaviest of this inert gasses; takes place naturally (especially in areas over granite) and it is considered a hazard to wellness
    • a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in places over granite) and it is considered a hazard to wellness

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  • Definition for "atomic number 86"
    • a radioactive gaseous factor formed because of the…
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  • Hypernym for "atomic number 86"
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