Ytterbium « Elements « Chemistry

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