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  2. Germanium - Wikipedia

    en.wikipedia.org/wiki/Germanium

    Germanium is created by stellar nucleosynthesis, mostly by the s-process in asymptotic giant branch stars. The s-process is a slow neutron capture of lighter elements inside pulsating red giant stars. [57] Germanium has been detected in some of the most distant stars [58] and in the atmosphere of Jupiter. [59]

  3. Wikipedia:Today's featured article/March 28, 2009 - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Today's_featured...

    Germanium has five naturally occurring isotopes ranging in atomic mass number from 70 to 76. It forms a large number of organometallic compounds, including tetraethylgermane and isobutylgermane. Germanium was discovered relatively late despite the fact that it is relatively abundant in the Earth's crust.

  4. Mendeleev's predicted elements - Wikipedia

    en.wikipedia.org/wiki/Mendeleev's_predicted_elements

    To give provisional names to his predicted elements, Dmitri Mendeleev used the prefixes eka- / ˈ iː k ə-/, [note 1] dvi- or dwi-, and tri-, from the Sanskrit names of digits 1, 2, and 3, [3] depending upon whether the predicted element was one, two, or three places down from the known element of the same group in his table.

  5. History of chemistry - Wikipedia

    en.wikipedia.org/wiki/History_of_chemistry

    The history of such philosophical theories that relate to chemistry can probably be traced back to every single ancient civilization. The common aspect in all these theories was the attempt to identify a small number of primary classical elements that make up all the various substances in nature.

  6. File:Mendeleev 1869 prediction of germanium (detail).svg

    en.wikipedia.org/wiki/File:Mendeleev_1869...

    The following other wikis use this file: Usage on ar.wikipedia.org جرمانيوم; Usage on bn.wikipedia.org জার্মেনিয়াম

  7. 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 17 November 2024. 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 ...

  8. List of German inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_German_inventions...

    German inventions and discoveries are ideas, objects, processes or techniques invented, innovated or discovered, partially or entirely, by Germans.Often, things discovered for the first time are also called inventions and in many cases, there is no clear line between the two.

  9. Ununennium - Wikipedia

    en.wikipedia.org/wiki/Ununennium

    This is an accepted version of this page This is the latest accepted revision, reviewed on 9 January 2025. Hypothetical chemical element, symbol Uue and atomic number 119 Chemical element with atomic number 119 (Uue) Ununennium, 119 Uue Theoretical element Ununennium Pronunciation / ˌ uː n. uː n ˈ ɛ n i ə m / ⓘ (OON -oon- EN -ee-əm) Alternative names element 119, eka-francium ...

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