Actinide concept

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The actinide concept in nuclear chemistry was first theorized by Glenn T. Seaborg in 1944, resulting in the extension of Dmitri Mendeleev's periodic table of the elements by placing a new actinide series, for elements 89–103, below the lanthanide series.[1] In later theoretical work, Seaborg proposed the transactinide series spanning elements 104–121 and the superactinide series containing elements 122–153.

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  1. ^ Seaborg, Glenn T. (1946). "The Transuranium Elements". Science. 104 (2704): 379–386. Bibcode:1946Sci...104..379S. doi:10.1126/science.104.2704.379. JSTOR 1675046. PMID 17842184.