Web Directory

» ChemGlobe: Hafnium
   Electronic, thermal, and steric data along with an isotope table.
   http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/72.html

» ChemicalElements.com: Hafnium
   Basic information, atomic structure, and isotopes.
   http://www.chemicalelements.com/elements/hf.html

» EnvironmentalChemistry.com: Hafnium
   Atomic structure, chemical and physical properties, and table of nuclides.
   http://environmentalchemistry.com/yogi/periodic/Hf.html

» It's Elemental: Hafnium
   Basic physical and historical information.
   http://education.jlab.org/itselemental/ele072.html

» LANL: Hafnium
   History, properties, uses, and handling.
   http://periodic.lanl.gov/elements/72.html

» Lenntech: Hafnium
   Physical data, chemical properties, health and environmental effects.
   http://www.lenntech.com/Periodic-chart-elements/Hf-en.htm

» Visual Elements: Hafnium
   General and physical information, source, uses, key isotopes, and ionisation energies.
   http://www.chemsoc.org/viselements/pages/hafnium.html

» Wikipedia: Hafnium
   Properties of the element, including its history, applications, and characteristics.
   http://en.wikipedia.org/wiki/Hafnium