ChemGlobe: Technetium - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/43.html
Electronic, thermal, and steric data along with an isotope table. |
ChemicalElements.com: Technetium - http://www.chemicalelements.com/elements/tc.html
Basic information, atomic structure, and isotopes. |
EnvironmentalChemistry.com: Technetium - http://environmentalchemistry.com/yogi/periodic/Tc.html
Atomic structure, chemical and physical properties, and table of nuclides. |
It's Elemental: Technetium - http://education.jlab.org/itselemental/ele043.html
Basic physical and historical information. |
LANL: Technetium - http://periodic.lanl.gov/elements/43.html
History, isotopes, properties, and handling. |
Lenntech: Technetium - http://www.lenntech.com/Periodic-chart-elements/Tc-en.htm
Physical data, chemical properties, and health effects. |
Radiochemistry of Technetium - http://library.lanl.gov/cgi-bin/getfile?rc000035.pdf
Full text of the monograph by Edward Anders (Enrico Fermi Institute and Dept. of Chemistry, University of Chicago, Chicago, Illinois). |
Visual Elements: Technetium - http://www.chemsoc.org/viselements/pages/technetium.html
Image, general and physical information, source, uses, key isotopes, and ionisation energies. |
WebElements: Technetium - http://www.webelements.com/webelements/elements/text/Tc/key.html
Extensive information on history, uses, occurrence, compounds, and properties. |
Wikipedia: Technetium - http://en.wikipedia.org/wiki/Technetium
Properties of the element, including its history, applications, and characteristics. |