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Visual Elements: Yttrium
Image, animation, uses, physical information, and ionisation energies.
EnvironmentalChemistry.com: Yttrium
Atomic structure, chemical and physical properties, and table of nuclides.
The Columbia Encyclopedia: Yttrium
Overview for the general reader.
WebElements: Yttrium
Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Yttrium
Properties of the element, including its history, applications, and charateristics.
Yttrium
Data tables and historic information.
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