Hydrogen anion

Hydrogen anion

The hydrogen anion is a negative hydrogen ion, H. It is an important constituent of the atmosphere of stars, such as the Sun, where it is the dominant absorber of photons with energies in the range 0.75-0.4 eV, ranging from the infrared into the visible spectrum (Rau 1999). It also occurs in the Earth's ionosphere (Rau 1999).

Its existence was first proven theoretically by Hans Bethe in 1929 (Bethe 1929). H is unusual because it has no bound excited states, as was finally proven in 1977 (Hill 1977). It has been studied experimentally using particle accelerators (Bryant 1977).

Chemical compounds that formally contain a hydrogen anion are called hydrides.

ources and references


*Bethe H. (1929). "Z. Phys.", 57, 815
*Bryant H.C. (1977). "Phys. Rev. Lett." 38, 228
*Hill R. N. (1977). "Phys. Rev. Lett." 38, 643
*Rau A. (1999). "The Negative Ion of Hydrogen", Chapter 5 of Srinivasan (1999)
*Srinivasan G. (1999). "From White Dwarfs to Black Holes: The Legacy of S. Chandrasekhar", (Chicago: University of Chicago Press)

Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Hydrogen ion — is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes. [ Compendium of Chemical Terminology , 2nd edition McNaught, A.D. and Wilkinson, A. Blackwell Science, 1997 [ISBN 0 86542 684 8] , also… …   Wikipedia

  • Hydrogen cyanide — IUPAC name …   Wikipedia

  • hydrogen ion — n 1) the cation H+ of acids consisting of a hydrogen atom whose electron has been transferred to the anion of the acid 2) HYDRONIUM * * * the nucleus of the hydrogen atom or a hydrogen atom that has lost its electron, H+; it bears a positive… …   Medical dictionary

  • Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …   Wikipedia

  • Hydrogen iodide — Chembox new Name = Hydrogen iodide ImageFile = Hydrogen iodide 2D dimensions.png ImageName = Hydrogen iodide ImageFile1 = Hydrogen iodide 3D vdW.svg ImageName1 = Hydrogen iodide IUPACName = Hydrogen iodide OtherNames = hydroiodic acid Section1 =… …   Wikipedia

  • hydrogen — /huy dreuh jeuhn/, n. a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements. Symbol: H; at. wt.: 1.00797; at. no.: 1; density: 0.0899 g/l at 0°C and 760 mm pressure. [1785 95;… …   Universalium

  • hydrogen ion — noun a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus • Hypernyms: ↑proton, ↑cation • Part Holonyms: ↑hydrogen atom * * * noun 1. : the cation H+ of acids consisting of a hydrogen atom wh …   Useful english dictionary

  • hydrogen carbonate — noun a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate • Syn: ↑bicarbonate • Hypernyms: ↑carbonate • Hyponyms: ↑bicarbonate of soda, ↑sodium hydrogen carbonate, ↑ …   Useful english dictionary

  • hydrogen sulfate — noun a) sulfuric acid b) The anion HSO or any salt containing this anion …   Wiktionary

  • hydrogen ion — noun Date: 1896 1. the cation H+ of acids consisting of a hydrogen atom whose electron has been transferred to the anion of the acid 2. hydronium …   New Collegiate Dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”