Copper « Elements « Chemistry

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ChemGlobe: Copper - Electronic, thermal, and steric data along with an isotope table.
ChemicalElements.com: Copper - Basic information, atomic structure, and table of isotopes.
Copper - Properties and applications along with photographs and chemical formulas of occurrences.
EnvironmentalChemistry.com: Copper - Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Copper - Basic physical and historical information.
LANL: Copper - History, properties, sources, and uses.
Lenntech: Copper - Physical data, chemical properties, health and environmental effects.
USGS Minerals Information: Copper - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Visual Elements: Copper - Image, general and physical information, source, uses, key isotopes, and ionisation energies.
WebElements: Copper - Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Copper - Properties of the element, including its history, applications, and characteristics.
Radiochemistry of Copper - Full text of the monograph by F. F. Dyer (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] (April, 1961)