Francium

  Actually the least unstable isotope, Fr-223 Some synthetic elements, like technetium, have later been found in nature. a b c d e

Francium

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Иностранные языки

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Do)". International Conference on the History of Chemistry. Lisbon. pp. 18. Archived from the original on 2006-02-24.
  • a b c d Van der Krogt, Peter (2006-01-10). "Francium". Elementymology & Elements Multidict. http://www.vanderkroft.net/elements/elem/fr.html. Retrieved 2007-04-08.
  • "Alabamine & Virginium". TIME. 1932-02-15. http://www.time.com/time/magazine/article/0,9171,743159,00.html. Retrieved 2007-04-01.
  • MacPherson, H. G. (1934). "An Investigation of the Magneto-Optic Method of Chemical Analysis". Physical Review (American Physical Society) 47 (4): 310315. doi:10.1103/PhysRev.47.310.
  • a b c "Francium", McGraw-Hill Encyclopedia of Science & Technology, 7, McGraw-Hill Professional, 2002, pp. 493494, ISBN 0-07-913665-6
  • Grant, Julius (1969), "Francium", Hackh's Chemical Dictionary, McGraw-Hill, pp. 279280
  • "History". Francium. State University of New York at Stony Brook. 2007-02-20. http://fr.physics.sunysb.edu/francium_news/history.HTM. Retrieved 2007-03-26.
  • Winter, Mark. "Geological information". Francium. The University of Sheffield. http://www.webelements.com/webelements/elements/text/Fr/geol.html. Retrieved 2007-03-26.
  • a b "Cooling and Trapping". Francium. State University of New York at Stony Brook. 2007-02-20. http://fr.physics.sunysb.edu/francium_news/trapping.HTM. Retrieved 2007-05-01.
  • "Production of Francium". Francium. State University of New York at Stony Brook. 2007-02-20. http://fr.physics.sunysb.edu/francium_news/production.HTM. Retrieved 2007-03-26.
  • "Francium". Los Alamos National Laboratory Chemistry Division. 2003-12-15. http://periodic.lanl.gov/elements/87.html. Retrieved 2007-03-29.
  • Considine, Glenn D., ed (2005). Francium, in Van Nostrand's Encyclopedia of Chemistry. New York: Wiley-Interscience. p. 679. ISBN 0-471-61525-0.
  • National Nuclear Data Center (1990). "Table of Isotopes decay data". Brookhaven National Laboratory. http://ie.lbl.gov/toi/nuclide.asp?iZA=870223. Retrieved 2007-04-04.
  • National Nuclear Data Center (2003). "Fr Isotopes". Brookhaven National Laboratory. http://ie.lbl.gov/education/parent/Fr_iso.htm. Retrieved 2007-04-04.
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