The actinide concept in nuclear chemistry was first theorized by
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Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro … Wikipedia
actinide element — ▪ chemical element group Introduction any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group they are significant largely because of their radioactivity.… … Universalium
Glenn T. Seaborg — Born April 19, 1912(1912 04 19) Ishpeming, Michigan, USA … Wikipedia
History of the periodic table — The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon… … Wikipedia
Actinoid — The actinoid (according to current IUPAC terminology; previously actinide) series encompasses the 15 chemical elements that lie between actinium and lawrencium included on the periodic table, with atomic numbers 89 103. [… … Wikipedia
Transactinide element — In chemistry, transactinide elements are the chemical elements with atomic numbers greater than those of the actinides, the heaviest of which is lawrencium (103). [ [http://www.iupac.org/reports/provisional/abstract04/connelly 310804.html IUPAC… … Wikipedia
Hassium — (pronEng|ˈhæsiəm or IPA|/ˈhɑːsiəm/ [ [http://dictionary.reference.com/browse/hassium hassium Definitions from Dictionary.com ] ] ) is a synthetic element in the periodic table that has the symbol Hs and atomic number 108. Hassium oxidizes… … Wikipedia
Seaborg, Glenn T. — ▪ American chemist in full Glenn Theodore Seaborg born April 19, 1912, Ishpeming, Mich., U.S. died Feb. 25, 1999, Lafayette, Calif. American nuclear (nuclear energy) chemist best known for his work on isolating and identifying transuranium… … Universalium
Seaborg, Glenn (Theodore) — born April 19, 1912, Ishpeming, Mich., U.S. died Feb. 25, 1999, Lafayette, Calif. U.S. nuclear chemist. Born to Swedish parents, he pursued graduate study at the University of California at Berkeley. Working with John Livingood, Emilio Segré, and … Universalium
Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of … Wikipedia
