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All about hydrogen

*STP = standard temperature and pressure

Name Hydrogen
Standard Atomic Weight (Ar) 1.008
Melting point13.99K
Boiling point20.271K
Colour @ STPcolourless
Density @ STP0.08988 g·L−1
Form @ STPGas
DiscovererHenry Cavendish
Named byAntoine Lavoisier


•Hydrogen is the lightest element in the periodic table.

•Hydrogen is the most common element in the universe. About 75% of the element mass of the universe is hydrogen.

•Hydrogen is extremely flamable and can release a large amount of energy when combusted. It's used as a fuel by the space shuttle main engine.

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