Oxygen

URI: https://gptkb.org/entity/Oxygen

GPTKB entity

AI-created image

Statements (84)

Predicate	Object
gptkbp:instanceOf	gptkb:chemical_compound
gptkbp:allotropes	ozone atomic oxygen dioxygen
gptkbp:appearance	gptkb:gasoline
gptkbp:atomicNumber	8
gptkbp:atomicWeight	15.999
gptkbp:block	p-block
gptkbp:boilingPoint	90.20 K
gptkbp:CASNumber	7782-44-7
gptkbp:category	diatomic molecule nonmetal chalcogen life-essential element
gptkbp:color	colorless
gptkbp:component	gptkb:bar gptkb:water ozone oxides
gptkbp:crystalSystem	cubic
gptkbp:density	1.429 g/L (at 0°C, 1 atm)
gptkbp:discoveredBy	gptkb:Carl_Wilhelm_Scheele gptkb:Joseph_Priestley
gptkbp:discoveredIn	1774
gptkbp:electronConfiguration	[He] 2s2 2p4
gptkbp:electronegativity	3.44
gptkbp:firstIonizationEnergy	1313.9 kJ/mol
gptkbp:flammability	supports combustion
gptkbp:foundIn	gptkb:Earth's_oceans gptkb:Earth's_atmosphere Earth's crust
gptkbp:isotopes	gptkb:O-16 gptkb:O-17 gptkb:O-18
gptkbp:IUPACName	oxygen
gptkbp:magneticOrdering	paramagnetic
gptkbp:meltingPoint	54.36 K
gptkbp:molecularForm	gptkb:O2
gptkbp:mostStableIsotope	gptkb:O-16
gptkbp:namedFor	gptkb:Antoine_Lavoisier
gptkbp:nameOrigin	Greek 'oxys' (acid) and 'genes' (producer)
gptkbp:oxidationStates	+1 +2 0 -1 -2
gptkbp:percentageInAtmosphere	20.95%
gptkbp:period	2
gptkbp:phaseAtSTP	gptkb:gasoline
gptkbp:reactions	combines with hydrogen to form water forms oxides with most elements forms ozone under UV light
gptkbp:relatedGroup	16
gptkbp:requires	aerobic respiration
gptkbp:riskFactor	can cause fire/explosion can cause oxygen toxicity
gptkbp:roleInBiology	essential for most life forms
gptkbp:roleInIndustry	gptkb:rocket_propellant water treatment chemical synthesis medical breathing gas steelmaking
gptkbp:solubility	slightly soluble
gptkbp:solubilityInSeawater	higher than in freshwater
gptkbp:standardState	gptkb:gasoline
gptkbp:storage	compressed gas cylinders liquid oxygen tanks
gptkbp:symbol	O
gptkbp:thermalConductivity	0.02658 W/(m·K)
gptkbp:toxicity	toxic at high concentrations
gptkbp:UNNumber	1072
gptkbp:uses	gptkb:medicine gptkb:chemical_industry aquaculture space exploration water purification cutting metals respirators rocket fuel oxidizer welding
gptkbp:bfsParent	gptkb:Carl_Djerassi gptkb:Walthamite
gptkbp:bfsLayer	4
https://www.w3.org/2000/01/rdf-schema#label	Oxygen