Britannica Nobel Prize: Helium «
http://www.britannica.com/nobel/micro/713_23.html | | Detailed overview and data. |
ChemGlobe: Helium «
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/2.html | | Electronic , thermal , and steric data along with basic information. |
ChemicalElements. com: Helium «
http://www.chemicalelements.com/elements/he.html | | Basic information , atomic structure , and table of isotopes. |
Corrosionsource. com: Helium «
http://www.corrosionsource.com/handbook/periodic/2.htm | | History , sources , properties , isotopes , and uses. |
EnvironmentalChemistry. com: Helium «
http://environmentalchemistry.com/yogi/periodic/He.html | | Atomic structure , chemical and physical properties , and table of nuclides. |
Especiál Gas Inc. : Helium «
http://www.c-f-c.com/specgas_products/helium.htm | | Numeric data , uses , and general information. |
Helium «
http://www.scescape.net/~woods/elements/helium.html | | Data tables and historic information. |
It's Elemental: Helium «
http://education.jlab.org/itselemental/ele002.html | | Basic physical and historical information. |
LANL: Helium «
http://periodic.lanl.gov/elements/2.html | | History , sources , properties , and uses. |
Lenntech: Helium «
http://www.lenntech.com/Periodic-chart-elements/He-en.htm | | Physical data , chemical properties , and health effects. |
USGS Minerals Information: Helium «
http://minerals.usgs.gov/minerals/pubs/commodity/helium/ | | Statistics and information on the worldwide supply , demand , and flow of the element (pdf format). |
Visual Elements: Helium «
http://www.chemsoc.org/viselements/pages/helium.html | | Image , animation , discovery , uses , physical information , and key isotopes. |
WebElements: Helium «
http://www.webelements.com/webelements/elements/text/He/key.html | | Extensive information on history , uses , occurrence , and properties of the element. |
Wikipedia: Helium «
http://en.wikipedia.org/wiki/Helium | | Properties of the element , including its history , applications , and characteristics. |
