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Definition of Atomic number 86
1. 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.
Lexicographical Neighbors of Atomic Number 86
Literary usage of Atomic number 86
Below you will find example usage of this term as found in modern and/or classical literature:
1. Within the Atom: A Popular View of Electrons and Quanta by John Mills (1921)
"An inert gas of atomic number 86. NUCLEUS One or more protons associated with
electrons in a compact group central to an atomic system. ..."
Other Resources:
