Template:Infobox oxygen

Oxygen, ₈O

Liquid oxygen bylin
Oxygen
Appearance	gas: colourless liquid: pale blue
Standard atomic weight Ar, std(O)	[7001159990300000000♠15.99903, 7001159997700000000♠15.99977] conventional: 7001159990000000000♠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 nitrogen ← oxygen → fluorine
Atomic nummer (Z)	8
Group	group 16 (chalcogens)
Period	period 2
Block	p-block
Element category	Reactive nonmetal
Electron confeeguration	[He] 2s2 2p4
Electrons per shell	2, 6
Pheesical properties
Phase at STP	gas
Meltin pynt	54.36 K ​(−218.79 °C, ​−361.82 °F)
Bylin pynt	90.188 K ​(−182.962 °C, ​−297.332 °F)
Density (at STP)	1.429 g/L
whan liquid (at b.p.)	1.141 g/cm3
Treeple pynt	54.361 K, ​0.1463 kPa
Creetical pynt	154.581 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 states	−2, −1, 0, +1, +2
Electronegativity	Pauling scale: 3.44
Ionisation energies	1st: 1313.9 kJ/mol 2nd: 3388.3 kJ/mol 3rd: 5300.5 kJ/mol (more)
Covalent radius	66±2 pm
Van der Waals radius	152 pm
Colour lines in a spectral range Spectral lines o oxygen
Ither properties
Naitural occurrence	primordial
Creestal structur	​cubic
Speed o soond	330 m/s (gas, at 27 °C)
Thermal conductivity	26.58×10−3  W/(m·K)
Magnetic orderin	paramagnetic
Magnetic susceptibility	+3449.0·10−6 cm3/mol (293 K)
CAS Nummer	7782-44-7
History
Diskivery	Carl Wilhelm Scheele (1771)
Named by	Antoine 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

style="text-align:left"| data m.p. cat
	in	calc from C	diff	report	ref
C	−218.79	—	—
K	54.36	54.36	0
F	−361.82	−361.82	0
WD	!
input	C: −218.79, K: 54.36, F: −361.82
comment

style="text-align:left"| data b.p. cat
	in	calc from C	diff	report	ref
C	−182.962	—	—
K	90.188	90.188	0
F	−297.332	−297.332	0
WD	!
input	C: −182.962, K: 90.188, F: −297.332
comment

PTOxygen

N ←	iso 8O  infobox  isobox	→ F
Commons  Wiktionary  Wikidata: Indexes in PT: § below · Page

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