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ChemicalElements.com: Ruthenium -
Basic information, atomic structure, and table of isotopes.
http://www.chemicalelements.com/elements/ru.html Visual Elements: Ruthenium -
Image, discovery, uses, source, and physical information.
http://www.chemsoc.org/viselements/pages/ruthenium.html Wikipedia: Ruthenium -
Properties of the element, including its history, applications, and characteristics.
http://en.wikipedia.org/wiki/Ruthenium It's Elemental: Ruthenium -
Basic physical and historical information.
http://education.jlab.org/itselemental/ele044.html WebElements: Ruthenium -
Extensive information on history, uses, occurrence, compounds, and properties.
http://www.webelements.com/webelements/elements/text/Ru/key.html ChemGlobe: Ruthenium -
Electronic, thermal, and steric data along with an isotope table.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/44.html Lenntech: Ruthenium -
Physical data, chemical properties, and health effects.
http://www.lenntech.com/Periodic-chart-elements/Ru-en.htm LANL: Ruthenium -
History, sources, uses, and properties.
http://periodic.lanl.gov/elements/44.html EnvironmentalChemistry.com: Ruthenium -
Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Ru.html
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