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Promethium

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    Science > Chemistry > Elements > Lanthanides  (17)

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	WebElements: Promethium - http://www.webelements.com/webelements/elements/text/Pm/key.html Extensive information on history, uses, occurrence, compounds, and properties.
	LANL: Promethium - http://periodic.lanl.gov/elements/61.html History, sources, uses, and properties.
	ChemicalElements.com: Promethium - http://www.chemicalelements.com/elements/pm.html Basic information, atomic structure, and isotopes.
	Wikipedia: Promethium - http://en.wikipedia.org/wiki/Promethium Properties of the element, including its history, applications, and characteristics.
	EnvironmentalChemistry.com: Promethium - http://environmentalchemistry.com/yogi/periodic/Pm.html Atomic structure, chemical and physical properties, and table of nuclides.

	It's Elemental: Promethium - http://education.jlab.org/itselemental/ele061.html Basic physical and historical information.
	Lenntech: Promethium - http://www.lenntech.com/Periodic-chart-elements/Pm-en.htm Physical data, chemical properties, health and environmental effects.
	Visual Elements: Promethium - http://www.chemsoc.org/viselements/pages/promethium.html Image, animation, source, uses, and ionisation energies.
	ChemGlobe: Promethium - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/61.html Electronic, thermal, and steric data along with an isotope table.

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