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Helium
helium. A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics. (Dorland, 27th ed)
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 As a gas, helium glows www.sciencenewsforkids.org |  File:Helium-glow.jpg en.wikipedia.org |  Name: Helium. Symbol: He www.carondelet.pvt.k12.ca.us |  Helium Also helium images-of-elements.com |
 Helium Atom chemistry.about.com |  Helium creattica.com |  January 20 - Helios Helium apod.nasa.gov |
Therapeutic use
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Wikipedia
Helium, Isotopes of helium, Helium mass spectrometer, Helium flash, Helium-4, Helium analyzer, National Helium Reserve, Helium star, Antiprotonic helium, Scanning Helium Ion Microscope
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