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WebElements: Barium - http://www.webelements.com/webelements/elements/text/Ba/key.html
Extensive information on history, uses, occurrence, compounds, and properties. |
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Wikipedia: Barium - http://en.wikipedia.org/wiki/Barium
Properties of the element, including its history, applications, and characteristics. |
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LANL: Barium - http://periodic.lanl.gov/elements/56.html
History, sources, properties, and uses. |
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ChemicalElements.com: Barium - http://www.chemicalelements.com/elements/ba.html
Basic information, atomic structure, and isotopes. |
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Lenntech: Barium - http://www.lenntech.com/Periodic-chart-elements/Ba-en.htm
Physical data, chemical properties, health and environmental effects. |
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It's Elemental: Barium - http://education.jlab.org/itselemental/ele056.html
Basic physical and historical information. |
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EnvironmentalChemistry.com: Barium - http://environmentalchemistry.com/yogi/periodic/Ba.html
Atomic structure, chemical and physical properties, and table of nuclides. |
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Visual Elements: Barium - http://www.chemsoc.org/viselements/pages/barium.html
Image, appearance, source, uses, key isotopes, and ionisation energies. |
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ChemGlobe: Barium - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/56.html
Electronic, thermal, and steric data, along with an isotope table. |