Hydrogen
Hydrogen
Hydrogen (pronounced: /ˈhaɪdrədʒən/) is a chemical element with the symbol H and atomic number 1. It is the lightest and most abundant chemical substance in the universe, constituting roughly 75% of its elemental mass.
Etymology
The word Hydrogen comes from the Greek words 'hydro' meaning water and 'genes' meaning creator. It was named by Antoine Lavoisier, who first isolated it in 1783.
Properties and Uses
Hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. It is used in a wide variety of applications, including the production of ammonia for fertilizer, in oil refining, and in the production of methanol. It is also used in fuel cells for generating electricity and can be used as a fuel for vehicles.
Related Terms
See Also
External links
- Medical encyclopedia article on Hydrogen
- Wikipedia's article - Hydrogen
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