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  2. Plutonium - Wikipedia

    en.wikipedia.org/wiki/Plutonium

    He chose the letters "Pu" as a joke, in reference to the interjection "P U" to indicate an especially disgusting smell, which passed without notice into the periodic table. [ note 3 ] Alternative names considered by Seaborg and others were "ultimium" or "extremium" because of the erroneous belief that they had found the last possible element on ...

  3. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    The periodic table and law are now a central and indispensable part of modern chemistry. The periodic table continues to evolve with the progress of science. In nature, only elements up to atomic number 94 exist; [a] to go further, it was necessary to synthesize new elements in the laboratory.

  4. List of chemical element name etymologies - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_element...

    Plutonium (Pu) 94 Πλούτων (Ploutōn) via "Pluto" Greek via Latin "god of wealth" [59] astrological; mythological Named after the dwarf planet Pluto (then considered to be the ninth planet), because it was discovered directly after element neptunium and is higher than element uranium in the periodic table. Thus, plutonium was named by ...

  5. List of chemical elements named after places - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements...

    Periodic table forms. ... Pu: 94 * - The element mercury was named directly for the deity, with only indirect naming connection to the planet (see etymology of mercury).

  6. History of the periodic table - Wikipedia

    en.wikipedia.org/wiki/History_of_the_periodic_table

    This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Development of the table of chemical elements The American chemist Glenn T. Seaborg —after whom the element seaborgium is named—standing in front of a periodic table, May 19, 1950 Part of a series on the Periodic table Periodic table forms 18-column 32-column Alternative and extended ...

  7. Fission products (by element) - Wikipedia

    en.wikipedia.org/wiki/Fission_products_(by_element)

    Fission product yields by mass for thermal neutron fission of U-235 and Pu-239 (the two typical of current nuclear power reactors) and U-233 (used in the thorium cycle). This page discusses each of the main elements in the mixture of fission products produced by nuclear fission of the common nuclear fuels uranium and plutonium.

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  9. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.