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A Writer's Dictionary:

unnilpentium Definition


Dictionary Home » Words Starting with U » unmistakeable ... Unq » unnilpentium


unnilpentium
noun
    1. chem.
      (symbol Unp, atomic number 105) an artificially manufactured radioactive metallic element that has six isotopes, all with half-lives of a fraction of a second. See also hahnium, nielsbohrium and joliotium.


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