lanthanide definition

  • noun:
    • See rare-earth element.
    • the 14 rare-earth elements from cerium (or from lanthanum) to lutetium in periodic table; because their outermost orbitals are bare, they've very similar biochemistry; below all of them are the actinides.
    • Any rare earth component of the lanthanide series (atomic numbers 57 through 71).
    • any section of the lanthanide series (atomic figures 57 through 71)

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