Science: Chemistry: Elements: Francium
Electronic, thermal, and steric data along with an isotope table.
Basic information, atomic structure, and isotopes table.
Atomic structure, chemical and physical properties, and table of nuclides.
Data tables and historic information.
Isotopes, natural occurrence, separation, analytical properties, applications, and bibliography.
Research group at the State University of New York at Stony Brook. History, facts, trapping information, and production.
It's Elemental: Francium
Basic physical and historical information.
Basic information and history.
Physical data and chemical properties.
Visual Elements: Francium
Image, general and physical information, and key isotopes.
Extensive information on history and properties.
Properties of the element, including its history and characteristics.
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