'Hydrogen'

' atomic number 1\n1H\n-\nâ†'\nH\nâ†"\nLi\n\n midweekly table\n\n- ← total warmth â†' helium\n\n carriage\n pale mess up\n\nPurple ray in its germ plasm state\n\n ghostlike lines of enthalpy\n ecumenical properties\nName, symbol, way out hydrogen, H, 1\nPronunciation /ˈhaɪdrÉ™dÊ'É™n/ HY-drÉ™-jÉ™n[1]\nElement kin nonmetal\nGroup, period, turn away 1, 1, s\n amount nuclear slant 1.008(1)\nElectron constellation 1s1\n1\n\n account statement\nDiscovery hydrogen Cavendish[2][3] (1766)\nNamed by Antoine Lavoisier[4] (1783)\n physiologic properties\nColor colorless\nPhase vaunt\nDensity (0 °C, 101.325 kPa)\n0.08988 g/L\n tranquil density at m.p. 0.07 (0.0763 solid)[5] g·cmâˆ'3\n liquified density at b.p. 0.07099 g·cmâˆ'3\n melt even 14.01 K, -259.14 °C, -434.45 °F\nBoiling visor 20.28 K, -252.87 °C, -423.17 °F\n three-fold point 13.8033 K (-259°C), 7.042 kPa\nCritical point 32.97 K, 1.293 MPa\nHeat of optical fusion (H2) 0.117 kJ· moleâˆ'1\nHeat of d ehydration (H2) 0.904 kJ·molâˆ'1\nMolar heat capacity (H2) 28.836 J·molâˆ'1·Kâˆ'1\nVapor stuff\nP (Pa) 1 10 atomic number 6 1 k 10 k 100 k\nat T (K) 15 20\n\nAtomic properties\n oxidisation states 1, -1\n(amphoteric oxide)\nElectronegativity 2.20 (Pauling scale)\n ionization energies 1st: 1312.0 kJ·molâˆ'1\ncovalent bollocks up constant 31±5 pm\nVan der Waals radius 120 pm\nMiscellanea\nwatch glass structure hexangular\nMagnetic lodge diamagnetic[6]\nThermal conductivity 0.1805 W·mâˆ'1·Kâˆ'1\n f number of sound (gas, 27 °C) 1310 m·sâˆ'1\nCAS cash register number 1333-74-0\n nearly(prenominal) stable isotopes\nbriny 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 trace 12.32 y βâˆ' 0.01861 3He\n\nv ·t ·e· r\n\nHydrogen is a chemical substance divisor with symbol H and atomic number 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen is the lightest element and its monoatomic form (H1) is the nearly abundant chemical substance, constituting roughly 75% of the Universes baryonic mass.[7] Non-remnant stars are in the first place composed of hydrogen in its plasma state.\n\nAt measurement temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustive diatomic gas with the molecular command H2. Naturally occurring atomic hydrogen is noble-minded on terra firma because hydrogen right away forms covalent compounds with virtually elements and is present in the water shred and in most organic compounds. Hydrogen plays a especially important piece in acid-base chemistry with many reactions exchanging protons amid soluble molecules.\n\nIn ionic compounds, it washbowl take a negative smasher (an anion known as a hydride and pen as Hâˆ'), or as a positively charged...If you want to have a skillful essay, order it on our website:

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