Francium
URI(s)
- http://id.loc.gov/authorities/subjects/sh85051541
- info:lc/authorities/sh85051541
- http://id.loc.gov/authorities/sh85051541#concept
Instance Of
Scheme Membership(s)
Collection Membership(s)
Variants
- Actinium K
- Alkalinium
- Catium
- Eka-cesium
- Moldavium
- Virginium
Broader Terms
Exact Matching Concepts from Other Schemes
Closely Matching Concepts from Other Schemes
Sources
- found: Wikipedia, Sept. 9, 2012(Francium is a chemical element with symbol Fr and atomic number 87. It was formerly known as eka-caesium and actinium K. It is one of the two least electronegative elements, the other being caesium. Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron; was the last element discovered in nature, rather than by synthesis)
- found: Emsley, J. Nature's building blocks, 2011(Francium; element 87; proposed names: alkalinium (symbol Ak); virginium (symbol Vi or Vm); moldavium (symbol Ml); catium; element 87 was discovered in 1939 by French physicist Marguerite Perey at the Curie Institute; francium is an intensely radioactive metal; member of group I (row 7s), also known as the alkali metal group, of the periodic table; was the last element to be discovered in Nature)
LC Classification
- QD181.F7
- QD412.F7
Change Notes
- 1986-02-11: new
- 2013-01-24: revised
Alternate Formats
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