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Hydrogen is a
chemical element; it has
symbol H and
atomic number 1. It is the
lightest and most
abundant chemical element in the universe, constituting...
- A
hydrogen-like atom (or
hydrogenic atom) is any atom or ion with a
single valence electron.
These atoms are
isoelectronic with
hydrogen.
Examples of hydrogen-like...
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Hydrogenation is a
chemical reaction between molecular hydrogen (H2) and
another compound or element,
usually in the
presence of a
catalyst such as nickel...
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Hydrogen peroxide is a
chemical compound with the
formula H2O2. In its pure form, it is a very pale blue
liquid that is
slightly more
viscous than water...
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Hydrogenics is a
developer and
manufacturer of
hydrogen generation and fuel cell
products based on
water electrolysis and proton-exchange
membrane (PEM)...
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Hydrogen sulfide is a
chemical compound with the
formula H2S. It is a
colorless chalcogen-hydride gas, and is toxic, corrosive, and flammable.
Trace amounts...
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Hydrogen fluoride (fluorane) is an
inorganic compound with
chemical formula HF. It is a very poisonous,
colorless gas or
liquid that
dissolves in water...
- In chemistry, a
hydrogen bond (H-bond) is a
specific type of
molecular interaction that
exhibits partial covalent character and
cannot be
described as...
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Hydrogen cyanide (formerly
known as
prussic acid) is a
chemical compound with the
formula HCN and
structural formula H−C≡N. It is a
highly toxic and flammable...
- A
hydrogen infrastructure is the
infrastructure of
points of
hydrogen production,
truck and
pipeline transport, and
hydrogen stations for the distribution...
