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  2. The periodic table has several blocks of elements, each named after the characteristic orbital of their valence electrons or vacancies1234:
    • s-block: Elements in this block have their valence electrons in s orbitals.
    • p-block: Elements in this block have their valence electrons in p orbitals.
    • d-block: Elements in this block have their valence electrons in d orbitals.
    • f-block: Elements in this block have their valence electrons in f orbitals.
    Learn more:
    A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in. The term seems to have been first used by Charles Janet. Each block is named after its characteristic orbital: s-block, p-block, d-block, f-block and g-block.
    en.wikipedia.org/wiki/Block_(periodic_table)
    A block on the periodic table is a group of elements that all have their electrons in the same atomic orbital. There are four blocks, s-, d-, f, and p-.
    simple.wikipedia.org/wiki/Block_(periodic_table)
    a set of elements in the periodic table of elements, defined by shape of an orbital—s, p, d, or f—where the valence electron lies / From Wikipedia, the free encyclopedia A block on the periodic table is a group of elements that all have their electrons in the same atomic orbital. There are four blocks, s-, d-, f, and p-.
    www.wikiwand.com/simple/Block_(periodic_table)
    An element block is a set of elements located in adjacent element groups. Charles Janet first applied the term (in French). The block names (s, p, d, f) originated from descriptions of spectroscopic lines of atomic orbitals: sharp, principal, diffuse, and fundamental.
    www.thoughtco.com/periodic-table-element-blocks …
     
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  4. Block (periodic table) - Wikipedia

  5. Periodic table - Wikipedia

    WEBPeriodic 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 …

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  9. Periodic table - Elements, Groups, Blocks | Britannica

    WEBPeriodic table - Elements, Groups, Blocks: The periodic table of the elements contains all of the chemical elements that have been discovered or made; they are arranged, in the order of their atomic numbers, in …

  10. What Are Element Blocks on the Periodic Table?

    WEBApr 4, 2020 · An element block is a set of elements located in adjacent element groups. Charles Janet first applied the term (in French). The block names (s, p, d, f) originated from descriptions of spectroscopic lines of …

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  11. Block (periodic table) - Wikiwand

  12. 6.8: Blocks of the Periodic Table - Chemistry LibreTexts

    WEBSep 20, 2022 · Therefore, nickel can be found in the fourth period of the periodic table. Based on electron configurations, the periodic table can be divided into blocks denoting which sublevel is in the process of being …

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