Science: Chemistry: Elements: Erbium
Electronic, thermal, and steric data along with an isotope table.
Basic information, atomic structure, and isotopes.
Atomic structure, chemical and physical properties, and table of nuclides.
Includes the history of the element, and a data sheet.
It's Elemental: Erbium
Basic physical and historical information.
Basic information and history.
Physical data, chemical properties, health and environmental effects.
Visual Elements: Erbium
Image, physical information, key isotopes, and ionisation energies.
Extensive information on history, uses, occurrence, compounds, and properties.
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