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Chemistry LibreTexts

f-Block Elements

  • Page ID
    11171
  • Thumbnail: A billet of highly enriched uranium that was recovered from scrap processed at the Y-12 National Security Complex Plant. Image used with permission (Public Domain).

    The f block elements are the lanthanides and actinides and are called the inner transition elements because of their placement in the periodic table due to their electron configurations. The f orbitals of the electron shell are filled with “n-2.” There is a maximum of fourteen electrons that can occupy the f orbitals.