Copper
Links
Radiochemistry of Copper
http://lib-www.lanl.gov/cgi-bin/getfile?rc000048.pdf
Full text of the monograph by F. F. Dyer (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF]
ChemicalElements.com: Copper
http://www.chemicalelements.com/elements/cu.html
Basic information, atomic structure, and table of isotopes.
Copper
http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e02900.html
Properties and applications along with photographs and chemical formulas of occurrences.
It's Elemental: Copper
http://education.jlab.org/itselemental/ele029.html
Basic physical and historical information.
USGS Minerals Information: Copper
http://minerals.usgs.gov/minerals/pubs/commodity/copper/
Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Visual Elements: Copper
http://www.chemsoc.org/viselements/pages/copper.html
Image, general and physical information, source, uses, key isotopes, and ionisation energies.
Wikipedia: Copper
http://www.wikipedia.org/wiki/Copper
Properties of the element, including its history, applications, and charateristics.
EnvironmentalChemistry.com: Copper
http://environmentalchemistry.com/yogi/periodic/Cu.html
Atomic structure, chemical and physical properties, and table of nuclides.
WebElements: Copper
http://www.webelements.com/webelements/elements/text/Cu/key.html
Extensive information on history, uses, occurrence, compounds, and properties of the element.
Lenntech: Copper
http://www.lenntech.com/Periodic-chart-elements/Cu-en.htm
Physical data, chemical properties, health and environmental effects.