Nathan
hot air ballon
Helium is a colourless, odourless gas. It belongs to group 18 and is chemically inert.
Balloons
Helium is lighter than air. So balloons or air ships filled with helium will float.
Mostly Bollons.
It uses gas from the sun.
Helium is chemically inert and does not form any compounds
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cooling superconductors
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Deep sea divers breath helium and oxygen, helium is also used to inflate party balloons and airship blimps.
Helium has 2 protons, 2 neutrons and 2 electrons. The symbol for helium is He and the atomic number is 2.