Hydogen


Hydogen : (Chem; Symb: H) A colorless, odorless, tasteless, monatonic gas that burns in air with a light blue flame at about 10850F. The lightest element in the atomic series. It has two natural isotopes of atomic weights 1 and (2) The first is ordinary hydrogen, or light hydrogen; the second is deuterium, or heavy hydrogen. A third isotope, tritium, atomic weight 3, is a radioactive form produced in reactors by bombarding lithium-6 with neutrons. Note: The flammability limits of hydrogen-air mixtures are 4 to 74% by volume. Liquid hydrogen is classed as a flammable compressed gas by the US Interstate Commerce Commission
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