Template:Infobox oxygen

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Oxygen,  8O
A transparent beaker conteenin a light blue fluid wi gas bubbles
Liquid oxygen bilin
General properties
Appearancegas: colourless
liquid: pale blue
Staundart atomic wecht (Ar, staundart)[15.9990315.99977] conventional: 15.999
Oxygen in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium


O

S
nitrogenoxygenfluorine
Atomic nummer (Z)8
Groupgroup 16 (chalcogens)
Periodperiod 2
Element category  diatomic nonmetal
Blockp-block
Electron confeeguration[He] 2s2 2p4
Electrons per shell
2, 6
Pheesical properties
Phase (at STP)gas
Meltin pynt54.36 K ​(−218.79 °C, ​−361.82 °F)
Bylin pynt90.188 K ​(−182.962 °C, ​−297.332 °F)
Density (at STP)1.429 g/L
when liquid (at b.p.)1.141 g/cm3
Treeple pynt54.361 K, ​0.1463 kPa
Creetical pynt154.581 K, 5.043 MPa
Heat o fusion(O2) 0.444 kJ/mol
Heat o vapourisation(O2) 6.82 kJ/mol
Molar heat capacity(O2) 29.378 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)       61 73 90
Atomic properties
Oxidation states2, 1, −1, −2
ElectronegativityPauling scale: 3.44
Ionisation energies
  • 1st: 1313.9 kJ/mol
  • 2nd: 3388.3 kJ/mol
  • 3rd: 5300.5 kJ/mol
  • (more)
Covalent radius66±2 pm
Van der Waals radius152 pm
Coloyr lines in a spectral range
Spectral lines o Infobox oxygen
Miscellanea
Creestal structurcubic
Cubic creestal structur for oxygen
Speed o soond330 m/s (gas, at 27 °C)
Thermal conductivity26.58×10−3  W/(m·K)
Magnetic orderinparamagnetic
Magnetic susceptibility+3449.0·10−6 cm3/mol (293 K)[1]
CAS Nummer7782-44-7
History
DiskiveryCarl Wilhelm Scheele (1771)
Named biAntoine Lavoisier (1777)
Main isotopes o oxygen
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
16O 99.76% stable
17O 0.04% stable
18O 0.20% stable
| references | in Wikidata
Oxygen
N ← → F
v · e

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  1. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4. 
  2. Meija, J.; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305. 
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