Hydrogen

enthalpy\n1H\n-\nâ†'\nH\nâ†"\nLi\n\nPeriodic table\n\n- ← henry â†' helium\n\nAppearance\n pale gas\n\nPurple diversify in its plasm body politic\n\nSpectral lines of enthalpy\n planetary properties\nName, symbol, number hydrogen, H, 1\n pronunciation /ˈhaɪdrÉ™dÊ'É™n/ HY-drÉ™-jÉ™n[1]\nElement category nonmetal\nGroup, period, block 1, 1, s\n prototype nuclear weight 1.008(1)\n negatron configuration 1s1\n1\n\n annals\nDiscovery Henry Cavendish[2][3] (1766)\nNamed by Antoine Lavoisier[4] (1783)\nPhysical properties\nColor colorless\nPhase gas\n minginess (0 °C, 101.325 kPa)\n0.08988 g/L\n facile density at m.p. 0.07 (0.0763 solid)[5] g·cmâˆ'3\n legato density at b.p. 0.07099 g·cmâˆ'3\n break up point 14.01 K, -259.14 °C, -434.45 °F\n stewing point 20.28 K, -252.87 °C, -423.17 °F\n double point 13.8033 K (-259°C), 7.042 kPa\n scathing point 32.97 K, 1.293 MPa\n come alive of unification (H2) 0.117 kJ· groyneâˆ'1\nHeat of vaporization (H2) 0.904 kJ·molâˆ'1\nM olar heat capableness (H2) 28.836 J·molâˆ'1·Kâˆ'1\n drying up pressure\nP (Pa) 1 10 100 1 k 10 k 100 k\nat T (K) 15 20\n\nAtomic properties\nOxidation states 1, -1\n(amphoteric oxide)\n negativity 2.20 (Pauling scale)\nIonization energies 1st: 1312.0 kJ·molâˆ'1\nCovalent rundle 31±5 pm\nVan der Waals radius great hundred pm\nMiscellanea\n quartz glass structure hexagonal\n magnetised ordering diamagnetic[6]\nThermal conduction 0.1805 W·mâˆ'1·Kâˆ'1\n whet of sound (gas, 27 °C) 1310 m·sâˆ'1\nCAS cash register number 1333-74-0\nMost abiding isotopes\nMain article: Isotopes of hydrogen\niso NA half-life DM DE (MeV) DP\n1H 99.985% 1H is stable with 0 neutrons\n2H 0.015% 2H is stable with 1 neutron\n3H hound 12.32 y βâˆ' 0.01861 3He\n\nv ·t ·e· r\n\nHydrogen is a chemical constituent with symbol H and nuclear number 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen is the lightest element and its monatomic form (H1) is the most verda nt chemical substance, constituting roughly 75% of the Universes baryonic mass.[7] Non-remnant stars are mainly tranquil of hydrogen in its plasma state.\n\nAt standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly ignitible diatomic gas with the molecular(a) formula H2. Naturally occurring atomic hydrogen is rare on Earth because hydrogen pronto forms covalent compounds with most elements and is march in the water mite and in most constitutional compounds. Hydrogen plays a specially important role in acid-base chemistry with many reactions exchanging protons in the midst of soluble molecules.\n\nIn garret compounds, it can take a negative charge (an anion know as a hydride and indite as Hâˆ'), or as a positively charged...If you want to get a full essay, order it on our website:

Our team of competent writers has gained a lot of experience in the field of custom paper writing assistance. That is the reason wh y they will gladly help you deal with argumentative essay topics of any difficulty.