hydrogen 1 | has symbol 1H | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has natural abundance 99.985 % | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has NMR frequency 100.000 MHz where 1H = 100 MHz; 2.3488 T | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has magnetogyric ratio 26.7510 × 107 rad T-1 s-1 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has NMR receptivity 5680 where 13C = 1.00 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has relative NMR sensitivity 1.0 by definition | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has nuclear magnetic moment μ = 2.7928456 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has nuclear spin I = 1/2 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has number of nucleons 1 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has number of neutrons 0 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has atomic mass 1.0078 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has space group P63/mmc for h.c.p. | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has space group Fm3m for cubic | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has space group I4 for tetragonal | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has crystal cell dimension a = 377.6, c = 616.2 pm for h.c.p. | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has crystal cell dimension a = 533.8 pm for cubic | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has crystal cell dimension a = 450, c = 368 pm for tetragonal | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has crystal type h.c.p. for h.c.p. | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has crystal type cubic for cubic | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has crystal type tetragonal for tetragonal | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has uses Nuclear Magnetic Resonance | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
is an instance of hydrogen | ![has URL: http://nucleardata.nuclear.lu.se/nucleardata/toi/nuclide.asp?iZA=10001, 2001-09-27 09:28:48.0 has URL: http://nucleardata.nuclear.lu.se/nucleardata/toi/nuclide.asp?iZA=10001, 2001-09-27 09:28:48.0](facet.gif) |
hydrogen | has stable isotope hydrogen 1, deuterium | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has lethal intake non-toxic | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has reserves almost limitless | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has main mining area | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has mineral water | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has neutron scattering length -0.37390 × 10-12 cm | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has electron affinity 72.8 kJ mol-1 from H to H- | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has toxic intake non-toxic | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has mass magnetic susceptibility -2.50 × 10-8 kg-1 m3 for gas | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has van der Waals radii 120 pm | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has covalent radii 30 pm | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has thermal neutron capture cross section 0.3326 barns | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has longest lived isotope hydrogen 1 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has isotope mass range 1 to 3 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has number of isotopes 3 | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has pronunciation hy-dro-jen | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has name origin hydro genes = water forming from Greek | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has discovery location London, England | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has abundance 1 in Sun relative to H = 1 × 1012 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has abundance 1520 p.p.m. in Earth's crust | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has abundance 0.5 p.p.m. by volume in Earth's atmosphere | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has abundance main constituent of water; some dissolved H2 in seawater | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has specimen small pressurized canisters. Warning ! | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has world production 350 × 109 m3 year-1 as H2 gas | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has chief source natural methane gas | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has mass absorption coefficient 0.435 cm2 g-1 for CuKα X-ray diffraction | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has mass absorption coefficient 0.380 cm2 g-1 for MoKα X-ray diffraction | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has atomic emission line 434.047 nm for H I | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has atomic emission line 486.133 nm for H I | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has atomic emission line 656.272 nm for H I | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has atomic emission line 656.285 nm for H I (strong) | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has atomic emission line 1875.10 nm for H I | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has term symbol 2S1/2 in ground state | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has electron configuration 1s1 in ground state | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has mass of element in person 7 kg for a 70 kg average person | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has daily dietary intake mainly as water | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has level in humans constituent of water in blood | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has level in humans 52000 p.p.m. in bone | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has level in humans 93000 p.p.m. in liver | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has level in humans 93000 p.p.m. in muscle | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has hazard flammable and explosive when mixed with air; can asphyxiate if it excludes oxygen from lungs | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has biological role constituent element of DNA. Component of water, essential to life. | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has thermal conductivity 0.1815 W m-1 K-1 at 300 K for gas | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has molar volume 13.26 cm3 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has heat capacity 28.824 J K-1 mol-1 for molecular gas (H2) at constant pressure 0.1 MPa at 298.15 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has heat capacity 20.784 J K-1 mol-1 for atomic gas at constant pressure 0.1 MPa at 298.15 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has heat of vaporization 0.46 kJ mol-1 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has heat of fusion 0.12 kJ mol-1 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has boiling point 20.28 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has melting point 14.01 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has electronegativity 2.20 Pauling | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has relative atomic mass 1.00794 in units of 12C = 12.000 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has ionic radii 0.00066 pm for H+ | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has ionic radii 154 pm for H- | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has atomic radii 78 pm | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has number of protons 1 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has registry number 1333-74-0 for Chemical Abstracts System database | ![has URL: http://info.cas.org, 2001-09-27 09:28:47.0 has URL: http://info.cas.org, 2001-09-27 09:28:47.0](facet.gif) |
has density 76.0 kg m-3 for solid at 11 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has density 70.8 kg m-3 for liquid at 20.28 K boiling point | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has density 0.08988 for gas at 273 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has synthesis mechanism CH4 + 2H2O = 3H2 + CO (main production mechanim) | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has synthesis mechanism electrolysis of brine using a mercury amalgam cell (minor production mechanism) | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has synthesis mechanism steam flowing over red hot coke produces H2 and CO (minor production mechanism) | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has ocean oxidation state I | ![2001-09-27 09:28:27.0 2001-09-27 09:28:27.0](facet.gif) |
has atomic number 1 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
reacts with air explosively | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has discovery date 1766 | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has discoverer H. Cavendish | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has Spanish translation hidrogeno | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has Italian translation idrogeno | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has German translation Wasserstoff | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has French translation hydrogene | ![2001-09-27 09:28:48.0 2001-09-27 09:28:48.0](facet.gif) |
has triple point temperature 13.96 K at 7.2 kPa | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has image ![](images/element/H.jpg) | ![2001-09-27 09:28:32.0 2001-09-27 09:28:32.0](facet.gif) |
has critical pressure 1297 kPa | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
has critical temperature 33.35 K | ![2001-09-27 09:28:47.0 2001-09-27 09:28:47.0](facet.gif) |
unclassified oceanic element | has ocean residence time unknown | ![2001-09-27 09:28:26.0 2001-09-27 09:28:26.0](facet.gif) |
has ocean concentration unknown | ![2001-09-27 09:28:26.0 2001-09-27 09:28:26.0](facet.gif) |
atmophile element | has occurrence atmosphere of a planet or asteroid | ![2001-09-27 09:28:26.0 2001-09-27 09:28:26.0](facet.gif) |
gaseous element | has state gas at standard temperature and pressure | ![2001-09-27 09:28:25.0 2001-09-27 09:28:25.0](facet.gif) |
element | is a part of Universe | ![2001-09-27 09:32:17.0 2001-09-27 09:32:17.0](facet.gif) |
has synonym atom | ![2001-09-27 09:28:19.0 2001-09-27 09:28:19.0](facet.gif) |
particle | obeys uncertainty principle | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has frequency inversely proportional to the wavelength | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has wavelength inversely proportional to its momentum | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has charge | ![2001-09-27 09:28:01.0 2001-09-27 09:28:01.0](facet.gif) |
has mass | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
physical object | has location or center of gravity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has angular momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has velocity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has temperature | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has volume | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has extent | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has material | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |