radon

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Related to Element 86: Element 82, Element 89, Element 87, Element 69, Element 68, Element 88

ra·don

 (rā′dŏn)
n. Symbol Rn
A colorless, radioactive, inert gaseous element that is formed by the radioactive decay of radium and is used to produce neutrons for research. Its most stable isotope is Rn-222 with a half-life of 3.82 days. A natural source of radiation found in most soils and groundwater, radon poses a serious health threat if inhaled. Atomic number 86; melting point -71°C; boiling point -61.7°C; density of gas 9.73 grams per liter; specific gravity (solid) 4. See Periodic Table.

radon

(ˈreɪdɒn)
n
(Elements & Compounds) a colourless radioactive element of the rare gas group, the most stable isotope of which, radon-222, is a decay product of radium. It is used as an alpha particle source in radiotherapy. Symbol: Rn; atomic no: 86; half-life of 222Rn: 3.82 days; valency: 0; density: 9.73 kg/m3; melting pt: –71°C; boiling pt: –61.7°C
[C20: from radium + -on]

ra•don

(ˈreɪ dɒn)

n.
a chemically inert, radioactive gaseous element produced by the decay of radium: emissions produced by outgassing of rock, brick, etc., are a health hazard. Symbol: Rn; at. no.: 86; at. wt.: 222.
[< German Radon (1918); see radium, -on2]

ra·don

(rā′dŏn)
Symbol Rn A colorless, odorless, radioactive element that is a noble gas. It is produced by the radioactive decay of radium and occurs in minute amounts in soil, rocks, and the air near the ground. Radon is used as a source of radiation for the treatment of cancer and other diseases. Its most stable isotope has a half-life of about four days. Atomic number 86. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.radon - a radioactive gaseous element formed by the disintegration of radiumradon - 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
chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
argonon, inert gas, noble gas - any of the chemically inert gaseous elements of the helium group in the periodic table
Translations
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radon

[ˈreɪdɒn] N (also radon gas) → radón m

radon

[ˈreɪdɒn] nradon m

radon

n (Chem) → Radon nt

ra·don

n. radón, elemento radiactivo gaseoso.

radon

n radón m