Rubidium
Links
Visual Elements: Rubidium
http://www.chemsoc.org/viselements/pages/rubidium.html
Image, source, uses, physical information, and key isotopes.
Radiochemistry of Rubidium
http://lib-www.lanl.gov/cgi-bin/getfile?rc000003.pdf
Full text of the monograph by G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF]
It's Elemental: Rubidium
http://education.jlab.org/itselemental/ele037.html
Basic physical and historical information.
ChemicalElements.com: Rubidium
http://www.chemicalelements.com/elements/rb.html
Basic information, atomic structure, and isotopes.
Rubidium
http://www.scescape.net/~woods/elements/rubidium.html
Data tables and historic information.
EnvironmentalChemistry.com: Rubidium
http://environmentalchemistry.com/yogi/periodic/Rb.html
Atomic structure, chemical and physical properties, and table of nuclides.
WebElements: Rubidium
http://www.webelements.com/webelements/elements/text/Rb/key.html
Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Rubidium
http://www.wikipedia.org/wiki/Rubidium
Properties of the element, including its history, applications, and charateristics.
Lenntech: Rubidium
http://www.lenntech.com/Periodic-chart-elements/Rb-en.htm
Physical data, chemical properties, and health effects.