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 By: Zach  ents.com/helium/ ents.com/helium/

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Presentation on theme: " By: Zach  ents.com/helium/ ents.com/helium/"— Presentation transcript:

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2  By: Zach  ents.com/helium/ ents.com/helium/

3 Helium is colorless. It’s a gas at 298k It has no hardness Its conductivity is W m -1 K -1 It is a non-metal. Its melting pt. is -458 °F Its boiling pt. is ( °F

4  Space group: Fm3-m (Space group number: 225)  Structure: ccp (cubic close-packed)  Cell parameters: ◦ a: pm ◦ b: pm ◦ c: pm ◦ α: ° ◦ β: ° ◦ γ: °

5 The symbol for helium is He and its atomic number is 2. Its atomic weight is (2).

6  Helium is a p-block  Its period in the periodic table is 1  Group name is noble-gas  Its Ground State electron configuration is 1s 2

7  Helium can be used to fill balloons  Inert gas for arc welding  high speed push gas inside air to air missiles for guidance corrections.  rare document preservation  nuclear detonation simulations

8  A gas for supersonic wind tunnels  Neon Lasers  helium filled border patrol "AEROSTAT”  It’s used in oxygen tanks for divers

9  There is very little helium left on earth but what is left is found in the atmosphere, and radio active decay.  In the universe there is pounds ppb left.

10  Helium doesn’t react with anything.  It has a oxidation state of 0

11 watch?v=FbzXXpsmfWY


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