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  2. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3 ; it is usually shown at the foot of the table to save horizontal space.

  3. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    Dmitri Mendeleev, Russian chemist who proposed the periodic table: f-block groups 7 f-block [258] (10.3) (1100) – – 1.3 – synthetic unknown phase 102 No Nobelium: Alfred Nobel, Swedish chemist and engineer f-block groups 7 f-block [259] (9.9) (1100) – – 1.3 – synthetic unknown phase 103 Lr Lawrencium: Ernest Lawrence, American ...

  4. Wikipedia:PERIODICTABLE - Wikipedia

    en.wikipedia.org/?title=Wikipedia:PERIODICTABLE&...

    Pages for logged out editors learn more. Contributions; Talk; Wikipedia: PERIODICTABLE

  5. Portal:Chemistry/Elements/Periodic Table - Wikipedia

    en.wikipedia.org/.../Elements/Periodic_Table

    Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18; Hydrogen & alkali metals Alkaline earth metals Triels Tetrels Pnicto­gens Chal­co­gens Halo­gens Noble gases

  6. List of chemical element naming controversies - Wikipedia

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

    Periodic table forms. ... [19] Indonesia [20] prior to 1997 element 104 had a Soviet proposal kurchatovium and element 105 had an American proposal hahnium. ...

  7. Types of periodic tables - Wikipedia

    en.wikipedia.org/wiki/Types_of_periodic_tables

    1914 — Hackh's periodic table: First spiral to take account of Mosley's atomic numbers, and the first to show successively larger pairs of coils. Also interesting as H stands alone in the centre [77] 1925 — Courtines's a model of the periodic table: A helix with the appearance of a submarine or a castle [78]

  8. Category:Groups (periodic table) - Wikipedia

    en.wikipedia.org/wiki/Category:Groups_(periodic...

    This page was last edited on 5 November 2021, at 20:47 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  9. File:The Periodic Table of the Elements in Pictures.pdf

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

    English: This pictorial periodic table is colorful, boring, and packed with information. In addition to the element's name, symbol, and atomic number, each element box has a drawing of one of the element's main human uses or natural occurrences. The table is color-coded to show the chemical groupings.