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Science: Chemistry: Elements: Lanthanides (2)

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

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