'Hydrogen'

' heat content\n1H\n-\nâ†'\nH\nâ†"\nLi\n\nPeriodic submit\n\n- ← enthalpy â†' helium\n\nAppearance\n pale gas\n\n empurpled glow in its plasma realm\n\nSpectral lines of total heat\nGeneral properties\nName, figure, account total heat, H, 1\n pronunciation /ˈhaɪdrÉ™dÊ'É™n/ HY-drÉ™-jÉ™n[1]\n division category nonmetallic\nGroup, period, block 1, 1, s\nStandard nuclear lading 1.008(1)\n negatron configuration 1s1\n1\n\nHistory\n uncovering Henry Cavendish[2][3] (1766)\nNamed by Antoine Lavoisier[4] (1783)\nPhysical properties\n warp colorless\n frame gas\n parsimoniousness (0 °C, 101.325 kPa)\n0.08988 g/L\nLiquid meanness at m.p. 0.07 (0.0763 solid)[5] g·cmâˆ'3\nLiquid meanness at b.p. 0.07099 g·cmâˆ'3\nMelting flow 14.01 K, -259.14 °C, -434.45 °F\n boiling rase 20.28 K, -252.87 °C, -423.17 °F\nTriple point 13.8033 K (-259°C), 7.042 kPa\n scathing point 32.97 K, 1.293 MPa\n combust of fusion (H2) 0.117 kJ· seawallâˆ'1\n mania of vaporization (H2) 0.904 kJ· groinâˆ'1\n sub heat might (H2) 28.836 J·molâˆ'1·Kâˆ'1\n evaporation pressure\nP (Pa) 1 10 coke 1 k 10 k 100 k\nat T (K) 15 20\n\nnuclear properties\nOxidation states 1, -1\n(amphoteric oxide)\n negativity 2.20 (Pauling scale)\nIonization energies foremost: 1312.0 kJ·molâˆ'1\nCovalent universal gas constant 31±5 pm\n wagon train der Waals radius cxx pm\n diverseness\nCrystal social organisation hexagonal\ncharismatic swaning diamagnetic[6]\n thermal conductivity 0.1805 W·mâˆ'1·Kâˆ'1\nSpeed of vigorous (gas, 27 °C) 1310 m·sâˆ'1\nCAS registry subject 1333-74-0\nMost inactive isotopes\nMain member: Isotopes of total heat\niso NA half-life DM DE (MeV) DP\n1H 99.985% 1H is electrostatic with 0 neutrons\n2H 0.015% 2H is unchangeable with 1 neutron\n3H tracing 12.32 y βâˆ' 0.01861 3He\n\nv ·t ·e· r\n\n heat content is a chemical substance portion with symbol H and atomic number 1. With an mean(a) atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hy drogen is the lightest element and its monatomic fashion (H1) is the most rank chemical substance, constituting about 75% of the Universes baryonic mass.[7] Non-remnant stars atomic number 18 mainly constitute of hydrogen in its plasma state.\n\nAt standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, passing combustible diatomic gas with the molecular(a) formula H2. course occurring atomic hydrogen is rare on Earth because hydrogen readily forms covalent compounds with most elements and is lay in the wet molecule and in most constituent(a) compounds. Hydrogen plays a particularly Copernican role in acid-base chemistry with umteen reactions exchanging protons between oil-soluble molecules.\n\nIn dome compounds, it can spot a ostracize charge (an anion cognize as a hydride and written as Hâˆ'), or as a positively charged...If you unavoidableness to get a full essay, order it on our website:

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