Helium


 * Element Name:** Helium


 * Element Symbol:** He


 * Atomic Mass:** 4[[image:Helium_Mackenzie.png width="216" height="288" align="right"]]


 * Atomic Number:** 2


 * Protons:** 2


 * Electrons:** 2


 * Discovery:** Pierre-Jules-Cesar- Janssen in 1868


 * How it was Named:** For the Greek God of the Sun, Helios


 * State of Matter:** Gas


 * Melting Point:** -272°C


 * Boiling Point:** -268°C


 * Characteristics:** Colorless, odorless, tasteless, and non-toxic


 * Uses of Element:** Gas shield for arc welding, protective gas in growing silicon, cooling medium for nuclear reactors, gas for supersonic wind tunnels


 * Interesting Facts:** Does not combine easily with other elements, there's very little helium on Earth, and it pressures liquid fuel rockets

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