Àdàkọ:Infobox ọ́ksíjìn

Ọ́ksíjìn, ₈O

Ọ́ksíjìn
Ìhànsójú	colorless gas; pale blue liquid. Oxygen bubbles rise in this photo of liquid oxygen.
Ìwúwo átọ̀mù Ar, std(O)	[15.99903, 15.99977] conventional: 15.999
Ọ́ksíjìn ní orí tábìlì àyè
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Gold Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson - ↑ O ↓ S nítrójìn ← ọ́ksíjìn → fluorínì
Nọ́mbà átọ̀mù (Z)	8
Ẹgbẹ́	group 16 (chalcogens)
Àyè	àyè 2
Àdìpọ̀	Àdìpọ̀-p
Ẹ̀ka ẹ́límẹ́ntì	Reactive nonmetal
Ìtò ẹ̀lẹ́ktrọ́nù	[He] 2s2 2p4
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 6
Àwọn ohun ìní ara
Ìfarahàn at STP	gas
Ìgbà ìyọ́	54.36 K ​(-218.79 °C, ​-361.82 °F)
Ígbà ìhó	90.20 K ​(-182.95 °C, ​-297.31 °F)
Kíki (at STP)	1.429 g/L
when liquid (at b.p.)	1.141 g/cm3
Critical point	154.59 K, 5.043 MPa
Heat of fusion	(O2) 0.444 kJ/mol
Heat of	(O2) 6.82 kJ/mol
Molar heat capacity	(O2) 29.378 J/(mol·K)
pressure 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
energies	(more)
Covalent radius	66±2 pm
Van der Waals radius	152 pm
Color lines in a spectral range Spectral lines of ọ́ksíjìn
Other properties
Natural occurrence	primordial
Crystal structure	​cubic
Speed of sound	(gas, 27 °C) 330 m/s
Thermal conductivity	26.58x10-3  W/(m·K)
Magnetic ordering	paramagnetic
CAS Number	7782-44-7
History
Discovery	Carl Wilhelm Scheele (1772)
Named by	Antoine Lavoisier (1777)
Main isotopes of ọ́ksíjìn
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 16O 99.76% 16O is stable with 8 neutrons 17O 0.039% 17O is stable with 9 neutrons 18O 0.201% 18O is stable with 10 neutrons

References

This reference list does not appear in the article.