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Definition of Atomic number 84
1. Noun. A radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor.
Lexicographical Neighbors of Atomic Number 84
Literary usage of Atomic number 84
Below you will find example usage of this term as found in modern and/or classical literature:
1. Science by American Association for the Advancement of Science (1915)
"... it loses a ß-particle and becomes Ra-E with atomic number 83; this loses
another /î-particle and becomes Ra-F with atomic number 84; this finally loses ..."
2. Within the Atom: A Popular View of Electrons and Quanta by John Mills (1921)
"In a similar manner when an atom of niton loses an alpha particle it becomes
isotopic with all other systems of atomic number 84. ..."
3. Professional Paper by Geological Survey (U.S.) (1922)
"That product of radioactivity has a period of only 10~* second; it comes into
existence, pays a flying call on atomic number 84, ..."
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