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Definition of Atomic number 91
1. Noun. A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
Lexicographical Neighbors of Atomic Number 91
Literary usage of Atomic number 91
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Scientific Monthly by American Association for the Advancement of Science (1922)
"... called Uranium-X2, of the same atomic weight 234, but of atomic number 91.
This disrupts with loss of another beta- particle even sooner than the last, ..."
Other Resources:
