The symbol for helium is He and its atomic number is 2. Its atomic weight is 4.002602 (2).
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
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
A gas for supersonic wind tunnels Neon Lasers helium filled border patrol "AEROSTAT” It’s used in oxygen tanks for divers
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 230000000 pounds ppb left.
Helium doesn’t react with anything. It has a oxidation state of 0