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Hydrogen - Reactions Of Hydrogen

compounds electron ion sulfide

Having only one electron in each of its atoms, hydrogen has two options for combining chemically with another atom. For one thing it can pair up its single electron with an electron from a non-metal atom to make a shared-pair covalent bond. Examples of such compounds are H2O, H2S and NH3 (water, hydrogen sulfide and ammonia) and virtually all of the millions of organic compounds. Or, it can take on an extra electron to become the negative ion H-, called a hydride ion, and combine with a metallic positive ion. Examples are lithium hydride LiH and calcium hydride CaH2, but these compounds are unstable in water and decompose to form hydrogen gas.

Hydrogen reacts with all the halogens to form hydrogen halides, such as hydrogen chloride HCl and hydrogen fluoride HF. These compounds are acids when dissolved in water, and are used among other things to dissolve metals and, in the case of HF, to etch glass.

With sulfur, hydrogen forms hydrogen sulfide, H2S, a highly poisonous gas. Fortunately, hydrogen sulfide has such a strong and disagreeable odor that people can smell very tiny amounts of it in the air and take steps to put some distance between it and them.


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almost 10 years ago

this isnt very help full can i please have more infomation about the reactions with hydrogen!!!

like a list of some sort with the name of the element and then what it makes when mixed with hydrogen!!

that would be helpful!!!

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about 3 years ago

nothing special in this page......i couldn't find any importand information :(

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about 7 years ago

as a young researcher have really liked the content and would wish to have a more detailed one.

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over 9 years ago

this information is very helpful with the reserch that i did. thank you alot. the concerns that i have would be to put some more information about the reactions.