Name :  Hydrogen
Symbol :  H
Atomic Number :  1
Atomic Weight :  1.00794
Specific Heat :  14.304 J/gK
Melting Point :  -255.34°C
Vaporization :  0.44936 kJ/mol
Boiling Point :  -252.87°C
Electronegativity :  2.2
Density@293 K :  0.00008988 g/cm³
Discovered :  Henry Cavendish, England, 1766
Description :  Tasteless, colorless, odorless gas. The most abundant element in the universe. Tenth most abundant element in the earth\'s crust.
Uses :  Most hydrogen is used in the production of ammonia. Also used in balloons and in metal refining. Also used as fuel in rockets. Its two heavier isotopes are: deuterium (D) and tritium (T) used respectively for nuclear fission and fusion.