See also:

• Science: Chemistry: Elements: Alkali Metals  (2)

ChemGlobe: Francium - Electronic, thermal, and steric data along with an isotope table..

ChemicalElements.com: Francium - Basic information, atomic structure, and isotopes table..

EnvironmentalChemistry.com: Francium - Atomic structure, chemical and physical properties, and table of nuclides..

Francium - Isotopes, natural occurrence, separation, analytical properties, applications, and bibliography..

Francium Spectroscopy - 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..

LANL: Francium - Basic information and history..

Lenntech: Francium - Physical data and chemical properties..

Visual Elements: Francium - Image, general and physical information, and key isotopes..

WebElements: Francium - Extensive information on history and properties..

Wikipedia: Francium - Properties of the element, including its history and characteristics..