Glenn Seaborg (Actinide and Lanthanide Series) (jan 1, 1930 – jan 1, 1930)

Description:

Seaborg contributed to the identification and placement of the actinide and lanthanide series in the periodic table, significantly expanding it.

Example: Plutonium (Pu) and neptunium (Np) are examples from the actinide series. Seaborg helped to place these elements in the correct position in the periodic table, below the lanthanides.

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