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atomic number 81 |
atomic number 82 |
atomic number 83 |
atomic number 84 |
atomic number 85 |
atomic number 86
| atomic number 87
| atomic number 88
| atomic number 89
| atomic number 9
| atomic number 90
atomic number 86
WORDNET DICTIONARY
Noun atomic number 86 has 1 sense
- atomic number 86(n = noun.substance) radon, rn - 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; Array is a kind of chemical element, element, argonon, inert gas, noble gas
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