|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
colorless gas
|
|
gptkbp:atomicNumber
|
8
|
|
gptkbp:block
|
p-block
|
|
gptkbp:boilingPoint
|
90.20 K
|
|
gptkbp:CASNumber
|
7782-44-7
|
|
gptkbp:component
|
gptkb:carbon_dioxide_(CO2)
oxides
water (H2O)
many organic compounds
|
|
gptkbp:density
|
1.429 g/L (at 0°C, 1 atm)
|
|
gptkbp:discoveredBy
|
gptkb:Carl_Wilhelm_Scheele
gptkb:Joseph_Priestley
|
|
gptkbp:discoveredIn
|
1774
|
|
gptkbp:electronegativity
|
3.44 (Pauling scale)
|
|
gptkbp:form
|
O2 (dioxygen)
O3 (ozone)
|
|
gptkbp:hasPolishName
|
gptkb:Tlen
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Tlen
|
|
gptkbp:isotopes
|
gptkb:O-16
gptkb:O-17
gptkb:O-18
|
|
gptkbp:meltingPoint
|
54.36 K
|
|
gptkbp:mostStableIsotope
|
gptkb:O-16
|
|
gptkbp:nameOrigin
|
Greek 'oxys' (acid) and 'genes' (producer)
|
|
gptkbp:oxidationStates
|
+1
+2
0
-1
-2
|
|
gptkbp:percentageInEarthAtmosphere
|
~21%
|
|
gptkbp:percentageInEarthCrust
|
~46% by mass
|
|
gptkbp:period
|
2
|
|
gptkbp:relatedGroup
|
16
|
|
gptkbp:requires
|
life on Earth
|
|
gptkbp:riskFactor
|
supports combustion
can cause fire/explosion in high concentrations
|
|
gptkbp:standardState
|
gptkb:gasoline
|
|
gptkbp:symbol
|
O
|
|
gptkbp:UNNumber
|
1072
|
|
gptkbp:uses
|
water treatment
respiration
medical breathing gas
rocket propellant
steelmaking
|
|
gptkbp:英文名
|
gptkb:Oxygen
|
|
gptkbp:bfsParent
|
gptkb:Kasia_Popowska
|
|
gptkbp:bfsLayer
|
7
|