Hydrogen is just as plentiful as uranium is scarce.

Hydrogen bonding is the chemical interaction that underlies the base-pairing rules described above.

Hydrogen cyanide is produced by the combustion or pyrolysis of certain materials under oxygen-deficient conditions.

Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used.

Hydrogen ( ) is a chemical element with symbol H and atomic number 1.

Hydrogen is a concern in metallurgy as it can embrittle many metals, complicating the design of pipelines and storage tanks.

Hydrogen is not found without its electron in ordinary chemistry ( room temperatures and pressures ), as ionized hydrogen is highly chemically reactive.

The ' Hydrogen on Demand ' process ( see direct borohydride fuel cell ) creates hydrogen as needed, but has other issues, such as the high price of the sodium borohydride that is the raw material.

The latest stable version is Mandriva Linux 2011 (" Hydrogen ").

Hydrogen is an extreme example of this form of condensation.

* The Hydrogen Moderated Self-regulating Nuclear Power Module ( HPM ) is a reactor design emanating from the Los Alamos National Laboratory that uses uranium hydride as fuel.

Hydrogen is also being developed as an electrical power storage medium.

Hydrogen is not a primary energy source, but a portable energy storage method, because it must first be manufactured by other energy sources in order to be used.

Once the Hydrogen at the core is consumed it expands into a red giant ( 4 ), then sheds its envelope into a planetary nebula and degenerates into a white dwarf ( 5 ).

** Hydrogen dissolves rather well in metals, especially in palladium ; this is studied as a means of hydrogen storage.

* Hydrogen is an excellent coolant.

* Hydrogen is environmentally-friendly

* November 25 – Heavy Hydrogen, later named Deuterium, is discovered by chemist Harold Clayton Urey.

Hydrogen peroxide is a harmful byproduct of many normal metabolic processes ; to prevent damage to cells and tissues, it must be quickly converted into other, less dangerous substances.

Hydrogen peroxide is used as a potent antimicrobial agent when cells are infected with a pathogen.

Hydrogen peroxide is naturally produced by the body and catalase breaks it down.

Hydrogen gas is ducted through this core, heated, and expelled from a rocket nozzle.

Hydrogen is combined with CO < sub > 2 </ sub > from the atmosphere, with methane then becoming a storable fuel and the water side product yielding oxygen to be liquefied for the oxidizer and hydrogen to be recycled back into the reactor.

Hydrogen was chosen as the reference, as it forms covalent bonds with a large variety of elements: its electronegativity was fixed first at 2. 1, later revised to 2. 20.

Hydrogen plays a particularly important role in acid-base chemistry with many reactions exchanging protons between soluble molecules.

Hydrogen gas was first artificially produced in the early 16th century, via the mixing of metals with strong acids.

Hydrogen atoms are so reactive that they combine with almost all elements.

Hydrogen, for example, with a single proton, has an atomic weight of 1. 007825 u.

Hydrogen would then be reacted with carbon dioxide in Sabatier process, producing methane and water.

Hydrogen sulfide reacts with aqueous selenous acid to produce selenium disulfide:

Atomic models will consist of a single nucleus that may be surrounded by one or more bound electrons, whilst molecular models are typically concerned with Molecular Hydrogen and it's Molecular hydrogen ion.

In 1928, he studied Albrecht Unsöld's hypothesis, and discovered that three quarters of the Sun is made of Hydrogen, and about one quarter is Helium, with 1 % being other elements.

Hydrogen then reacts with oxygen gas on a palladium catalyst to produce more water, thereby removing oxygen gas.

Let us consider the atom of Hydrogen in the electric field rotating with

Hydrogen sulfides and sulfides react with copper to form various copper sulfides on the surface.

Hydrogen has a relatively low electron affinity, 72. 77 kJ / mol and reacts exothermically with protons a powerful Lewis base.

First order perturbation theory with these fine-structure corrections yields the following formula for the Hydrogen atom in the Paschen-Back limit:

At the 2012 World Hydrogen Energy Conference, Daimler AG, Honda, Hyundai and Toyota all confirmed plans to produce hydrogen fuel cell vehicles for sale by 2015, with some types planned to enter the showroom in 2013.

According to the South Carolina Hydrogen & Fuel Cell Alliance, the Columbia station has a current capacity of 120 kg a day, with future plans to develop on-site hydrogen production from electrolysis and reformation.

First used by the organic chemist Friedrich August Kekulé von Stradonitz the carbon atoms in this type of diagram are implied to be located at the vertices ( corners ) and termini of line segments rather than being indicated with the atomic symbol C. Hydrogen atoms attached to carbon atoms are not indicated: each carbon atom is understood to be associated with enough hydrogen atoms to give the carbon atom four bonds.

In 1950, Kurchatov contributed in the development of the Hydrogen bomb with Andrei Sakharov who originated this development as Sakharov's Third Idea.

Another perspective on the problems that companies seeking to commercialize Hydrogen fuel cell technology have faced, is that the technology would only be economical in a regulatory regime that imposed a significant price on fossil-fuel-generated carbon emissions, with a goal of effectively reducing such emissions and slowing global warming trends.

Hydrogen cyanamide interacts with the cytokinin metabolic cycle, which results in triggering a new growth cycle.

Hydrogen peroxide / kerosene fuelled engines such as the British Gamma of the 1950s used a closed-cycle process ( arguably not staged combustion, but that's mostly a question of semantics ) by catalytically decomposing the peroxide to drive turbines before combustion with the kerosene in the combustion chamber proper.