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 * __Helium-He __**

Helium is a nontoxic,colorless,odorless and tasteless monatomic gas that is represented on the periodic table by the symbol HE. It is most well known as the gas that makes ballons float (due to the fact it is lighter than air) and also because it gives you a hilarious voice.It is the second lightest element, it is also the most common in the in the universe as far as mankind is aware.The first sighting of helium in the sun was first observed during a solar eclipse in 1868. A bright yellow line was seen and was later shown to match no known element. This new element was named by J. N. Lockyer and E. Frankland from helios which is the greek word for sun. Common uses Helium(He) is often used in hot air ballons and other aircraft that use the fact it is lighter than air. It is also often mixed with oxygen for deep sea divers to breathe. another use is to help refinine titanium(Ti) and zirconium(Zr).
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