See also:

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

• ChemGlobe: Rubidium - Electronic, thermal, and steric data along with an isotope table.
• ChemicalElements.com: Rubidium - Basic information, atomic structure, and isotopes.
• EnvironmentalChemistry.com: Rubidium - Atomic structure, chemical and physical properties, and table of nuclides.
• It's Elemental: Rubidium - Basic physical and historical information.
• LANL: Rubidium - Sources, properties, isotopes, and uses.
• Lenntech: Rubidium - Physical data, chemical properties, and health effects.
• Visual Elements: Rubidium - Image, source, uses, physical information, and key isotopes.
• WebElements: Rubidium - Extensive information on history, uses, occurrence, compounds, and properties of the element.
• Wikipedia: Rubidium - Properties of the element, including its history, applications, and characteristics.

• Radiochemistry of Rubidium - Full text of the monograph by G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] (February, 1962)