Home > Science > Chemistry > Elements > Helium
http://www.chemicalelements.com/elements/he.html
Basic information, atomic structure, and table of isotopes.
http://www.corrosionsource.com/handbook/periodic/2.htm
History, sources, properties, isotopes, and uses.
http://environmentalchemistry.com/yogi/periodic/He.html
Atomic structure, chemical and physical properties, and table of nuclides.
http://www.c-f-c.com/specgas_products/helium.htm
Numeric data, uses, and general information.
http://education.jlab.org/itselemental/ele002.html
Basic physical and historical information.
http://www.lenntech.com/Periodic-chart-elements/He-en.htm
Physical data, chemical properties, and health effects.
http://minerals.usgs.gov/minerals/pubs/commodity/helium/
Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
http://www.webelements.com/helium/
Extensive information on history, uses, occurrence, and properties of the element.
http://en.wikipedia.org/wiki/Helium
Properties of the element, including its history, applications, and characteristics.
Home > Science > Chemistry > Elements > Helium
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