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...iginally developed for killing insects and rats, a stable preparation of [[hydrogen cyanide]] that, with modifications, was the chemical used in the [[Auschwit

A molecule consisting of an oxygen atom and a hydrogen atom connected by a covalent bond (single bond).

...a [[rocket engine]] but sometimes in a [[turbine]], such as concentrated [[hydrogen peroxide]] passed over a catalyst that breaks it into steam

A [[chemical compound]] with the [[chemical formula|formula]] [[Hydrogen|H]]₂[[Sulphur|S]], which is a colorless, highly toxic, flammabl

<includeonly> </includeonly><noinclude>Hydrogen is in a class of its own, as in some instances it can behave like a metal a

'''Zyklon B''' was a stabilized preparation of [[hydrogen cyanide]], originally developed for killing insects and rats, but, with mo The basic preparation, for commercial use, had the hydrogen cyanide adsorbed onto an inert substrate, along with a warning agent that w

A haematological condition in which the reducing hydrogen ion concentration of arterial blood plasma (alkalemia), results in the pH o

...here most stars - all those in the phase where they shine from energy from Hydrogen fusion in there core, is called the "[[main sequence]]".]] ...gh [[Hydrogen fusion]] - the nuclear process where the nuclei of several [[Hydrogen]] atoms fuse to form an atom of [[Helium]]. Every star above the main sequ

...mistry]] &mdash; from the [[chemical element|elements]] [[nitrogen]] and [[hydrogen]].

A chemical compound with one oxygen and two hydrogen atoms (H₂0). It is often in a liquid form and makes up the bulk

[[Organic compound]]s containing [[carbon]], [[hydrogen]], and [[oxygen]]; includes [[sugar]]s and [[starch]]es that provide [[ener

{{r|Hydrogen-like atom}} {{r|Hydrogen}}

...ation (by synthesis or by other means) of chemical compounds of carbon and hydrogen, which may contain any number of other elements.

...[[LiH]], and oxygen has an oxidation state of -1 in [[peroxide]]s, e.g. [[Hydrogen Peroxide|H₂O₂]];

Well-known examples of one-letter symbols are H for [[hydrogen]] and O for [[oxygen]]; For example, H⁺ means a hydrogen ion, and Ca²⁺ a calcium ion (with two electrons missing).

...at with high core outlet temperatures which enables applications such as [[hydrogen production]] or process heat for the petrochemical industry or others. <ref ...ndustrial plants. Hydrogen generation is one of the major objectives, with hydrogen being seen as a petroleum alternative. Competitive reactors include the [[u

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...nd|covalent]] and non-[[Ionic bond|ionic]] [[chemical bond]] involving a [[hydrogen]] [[atom]] and either [[Fluorine]], [[Nitrogen]], or [[Oxygen]].

...pound]] with the [[chemical formula|formula]] [[Silicon|Si]]([[Carbon|C]][[Hydrogen|H]]₃)₄, used as a standard in ¹H and <sup

|elClass=Periodic table of elements{{!}}Like Hydrogen, Deuterium can behave as a Metal and a Non-Metal ...occurring isotope of hydrogen and represents 0.015% of naturally occurring hydrogen, with H-1 representing the remaining 99.985%.

...ages}}</noinclude>A theoretical constant related to the spectrum of atomic hydrogen defined by the Bohr theory of the atom as: ''R_&infin; = m<sub>e<

...r of [[organic compound]]s (compounds containing at least one [[carbon]]-[[hydrogen]] bond).

|+ Isotopes of Hydrogen and Their Properties

...ry powerful gravity, due to its large mass, and is capable of holding onto hydrogen. ...ydrogen when the sun went nuclear 5 billion years ago and blew much of the hydrogen out of the inner [[solar system]]. Saturn's moon [[Titan]] also has an atmo

...h century because of his role as the main developer of the [[fusion device|hydrogen bomb]], his outspoken defense of an unassailable nuclear arsenal, and suppo

...demonstrator, to try to show that shipping industrial quantities of liquid hydrogen could play a significant role in the world's energy economy.<ref name=kawas The vessel is capable of carrying 1,250 cubic metres of liquid hydrogen in a single sperical insulated double walled tank.<ref name=offshoreEnergyB

{{r|Hydrogen bond}}

...ss''' is a process used to produce the useful substance [[ammonia]] from [[hydrogen]] and [[nitrogen]]. ==Sources of hydrogen and nitrogen==

...ergy. In a hydrogen bomb, fusion of deuterium and tritium (two isotopes of hydrogen) releases four times as much energy as the same mass of uranium in a fissio

{{r|Hydrogen-like atom}} {{r|Hydrogen}}

...infin;</sub>'', originally defined empirically in terms of the spectrum of hydrogen, is given a theoretical value by the Bohr theory of the atom as (in [[SI un ...ar=1988 |publisher=World Scientific |author=GW Series |chapter=Chapter 10: Hydrogen and the fundamental atomic constants}}

...gas phase are oxygen and nitrogen (the main components of air), as well as hydrogen and at least four of the halogens (fluorine, chlorine, bromine, iodine, and

{{Image|Hydrogen sulfide.png|right|150px|}} ...fide'') is a [[chemical compound]] with the [[chemical formula|formula]] [[Hydrogen|H]]₂[[Sulphur|S]]. It is a colourless, highly toxic, flammable [

{{r|Hydrogen bond}}

{{r|Hydrogen sulphide}}

...oes so less readily than carbonic acid. When the bicarbonate ion loses its hydrogen ion, it forms the double-charged negative carbonate ion (CO₃<sup

...is a [[choking gas]] that reacts with water to produce carbon dioxide and hydrogen chloride gas, which is corrosive. Exposure can lead to [[pulmonary edema]] ...px|Phosgene decomposes in the presence of water to form carbon dioxide and hydrogen chloride gas.}}

{{r|Hydrogen bond}}

|elClass=Periodic table of elements{{!}}Like Hydrogen, Tritium can behave as a Metal and a Non-Metal ...symbol '''T''' or '''³H''', is an [[isotope]] of the element [[hydrogen]] that has a nucleus containing one [[proton]] and two [[neutron]]s (i.e.,

{{r|Hydrogen sulphide}}

{{r|Hydrogen sulphide}}

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{{r|Hydrogen bond}}

{{r|Hydrogen}}

{{r|Hydrogen}}

...ein]]s. The ''[[side chain]]'', or ''[[residual group]]'' of glycine is a hydrogen atom. It is one of the non-polar amino acids.

{{r|Hydrogen}}

{{r|Hydrogen sulphide}}

...terize as abnormally increased acidity &mdash; measured as pH reduction or hydrogen ion concentration ([H⁺]) increase &mdash; accompanied by abnorma

{{r|Hydrogen sulphide}}