ordinary hydrogen
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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 — 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 bond — A hydrogen bond results from a dipole dipole force between an electronegative atom and a hydrogen atom bonded to nitrogen, oxygen or fluorine (thus the name hydrogen bond , which must not be confused with a covalent bond to hydrogen). The energy… … Wikipedia
Hydrogen chloride — HCl redirects here. For the acid, see Hydrochloric acid. Hydrogen chloride … Wikipedia
Hydrogen atom — Stable Isotope isotope name = Hydrogen 1 isotope filename = hydrogen 1.png alternate names = protium mass number = 1 symbol = H num neutrons = 0 num protons = 1 abundance = 99.985% mass = 1.007825 spin = ½+ excess energy = 7288.969 error1 = 0.001 … Wikipedia
hydrogen bond — Bond Bond (b[o^]nd), n. [The same word as band. Cf. {Band}, {Bend}.] 1. That which binds, ties, fastens, or confines, or by which anything is fastened or bound, as a cord, chain, etc.; a band; a ligament; a shackle or a manacle. [1913 Webster]… … The Collaborative International Dictionary of English
hydrogen — 1. A gaseous element, atomic no. 1, atomic wt. 1.00794. 2. The molecular form (H2) of the element. SYN: dihydrogen. [hydro + G. gen, producing] activated h. h. removed by a dehydrogenase, e.g., via a … Medical dictionary
Metallic hydrogen — Some gas giants have metallic hydrogen in their centers Metallic hydrogen is a state of hydrogen which results when it is sufficiently compressed and undergoes a phase transition; it is an example of degenerate matter. Solid metallic hydrogen is… … Wikipedia
Nascent hydrogen — Systematic name Hydrogen[1] (substitutive) Hydrogen(•)[2] (additive) Iden … Wikipedia
ortho-hydrogen — |ȯ(r)thə+ noun : molecular hydrogen in which the two hydrogen nuclei are spinning in the same direction compare para hydrogen ordinary hydrogen gas comprises an equilibrium mixture of three parts of ortho hydrogen (with parallel nuclear spin) to … Useful english dictionary
