Britannica Nobel Prize: Hafnium « http://www.britannica.com/nobel/micro/254_6.html | | Detailed overview and data. |
ChemGlobe: Hafnium « http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/72.html | | Electronic , thermal , and steric data along with an isotope table. |
ChemicalElements. com: Hafnium « http://www.chemicalelements.com/elements/hf.html | | Basic information , atomic structure , and isotopes. |
EnvironmentalChemistry. com: Hafnium « http://environmentalchemistry.com/yogi/periodic/Hf.html | | Atomic structure , chemical and physical properties , and table of nuclides. |
Hafnium « http://www.scescape.net/~woods/elements/hafnium.html | | Data tables and historic information. |
It's Elemental: Hafnium « http://education.jlab.org/itselemental/ele072.html | | Basic physical and historical information. |
LANL: Hafnium « http://periodic.lanl.gov/elements/72.html | | History , properties , uses , and handling. |
Lenntech: Hafnium « http://www.lenntech.com/Periodic-chart-elements/Hf-en.htm | | Physical data , chemical properties , health and environmental effects. |
Visual Elements: Hafnium « http://www.chemsoc.org/viselements/pages/hafnium.html | | General and physical information , source , uses , key isotopes , and ionisation energies. |
WebElements: Hafnium « http://www.webelements.com/webelements/elements/text/Hf/key.html | | Extensive information on history , uses , occurrence , compounds , and properties. |
Wikipedia: Hafnium « http://en.wikipedia.org/wiki/Hafnium | | Properties of the element , including its history , applications , and characteristics. |