Template:Infobox oxygen

Oxygen, ₈O

Template:Infobox element/symbol-to-top-image-caption
Oxygen
Pronunciation	Template:Infobox element/pronunciation
Allotropes	Template:Infobox element/symbol-to-allotropes
Appearance	gas: colorless liquid and solid: pale blue
Mass number	Template:Infobox element/symbol-to-most-stable-isotope
Oxygen in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)	8
Group	Template:Infobox element/symbol-to-group
Period	Template:Infobox element/symbol-to-period
Block	Template:Infobox element/block format
Electron configuration	Template:Infobox element/symbol-to-electron-configuration
Electrons per shell	2, 6
Physical properties
Phase at STP	Template:Infobox element/symbol-to-phase
Melting point	(O2) 54.36 K ​(−218.79 °C, ​−361.82 °F)
Boiling point	(O2) 90.188 K ​(−182.962 °C, ​−297.332 °F)
Density (at STP)	1.429 g/L
when liquid (at b.p.)	1.141 g/cm3
Triple point	54.361 K, ​0.1463 kPa
Critical point	154.581 K, 5.043 MPa
Heat of fusion	(O2) 0.444 kJ/mol
Heat of vaporization	(O2) 6.82 kJ/mol
Molar heat capacity	14.689 J/(mol·K) (O) 29.378 J/(mol·K) (O2)
Vapor pressureTemplate:Infobox element/vapor pressure table
Atomic properties
Oxidation states	Template:Element-symbol-to-oxidation-state-data
Electronegativity	Pauling scale: 3.44
Ionization 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
Template:Infobox element/spectral lines
Other properties
Natural occurrence	Template:Infobox element/symbol-to-occurrence
Crystal structure	​Template:Infobox element/crystal structure (cP16)
Lattice constant	Template:Infobox element/crystal structure a = 678.28 pm (at t.p.)
Thermal conductivity	26.58×10−3  W/(m⋅K)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+3449.0×10−6 cm3/mol (293 K)
Speed of sound	330 m/s (gas, at 27 °C)
CAS Number	7782-44-7
History
Naming	from the Greek ὀξύς (acid, literally 'sharp', from the taste of acids) and -γενής (producer)
Discovery	Michael Sendivogius Carl Wilhelm Scheele (1604, 1771)
Named by	Antoine Lavoisier (1777)
Symbol	Template:Infobox element/symbol-to-symbol-etymology
Isotopes of oxygen Template:V

child table, as reused in {IB-O} Template:V
Main isotopes of Template:Infobox element/symbol-to-name
{{infobox Template:Infobox element/symbol-to-name isotopes|child=yes}}

Template:Infobox element/symbol-to--overview1

References

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