10/27/09

Helium HE

Helium HE



Physical Properties


Density: 0.1786g/l


Melting Point: 0.95k


Boiling Point: 4.22k


Phase: Gas




Backround

Helium consist of 2 protons, 2 neutrons and 2 electrons. It is the only member in the noble gas family in group 18 that can't be made into a solid by lowering it's temperature, and has the lowest boling point of any element. Pierre Jansen studied light from the sun during a solar eclipse, and he found proof that a new element in the sun exsisted called Helium in 1868.





Uses for Helium

We can use Helium for filling up balloons and blimps. We can also use Helium in lead detection, neon signs and also to protect objest from reacting with oxygen.

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