|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:abundanceInAtmosphere
|
0.934%
|
|
gptkbp:appearance
|
colorless gas
|
|
gptkbp:aroma
|
odorless
|
|
gptkbp:atomicNumber
|
18
|
|
gptkbp:atomicRadius
|
71 pm
|
|
gptkbp:boilingPoint
|
−185.848 °C
|
|
gptkbp:CASNumber
|
7440-37-1
|
|
gptkbp:category
|
nonmetal
|
|
gptkbp:color
|
colorless
|
|
gptkbp:criticalFor
|
150.687 K, 4.863 MPa
|
|
gptkbp:crystalSystem
|
face-centered cubic
|
|
gptkbp:density
|
1.784 g/L (at 0 °C, 1 atm)
|
|
gptkbp:discoveredBy
|
gptkb:Lord_Rayleigh
gptkb:William_Ramsay
|
|
gptkbp:discoveredIn
|
1894
|
|
gptkbp:electronConfiguration
|
[Ne] 3s2 3p6
|
|
gptkbp:electronegativity
|
not applicable
|
|
gptkbp:firstIsolatedFrom
|
gptkb:Lord_Rayleigh
gptkb:William_Ramsay
|
|
gptkbp:flammability
|
non-flammable
|
|
gptkbp:frequency
|
visible and ultraviolet
|
|
gptkbp:heatOfFusion
|
1.18 kJ/mol
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
argon
|
|
gptkbp:isotopes
|
gptkb:36Ar
gptkb:38Ar
gptkb:40Ar
|
|
gptkbp:magneticOrdering
|
diamagnetic
|
|
gptkbp:massNumber
|
39.948 u
|
|
gptkbp:meltingPoint
|
−189.34 °C
|
|
gptkbp:molarHeatCapacity
|
20.85 J/(mol·K)
|
|
gptkbp:nameOrigin
|
Greek 'argos', meaning inactive
|
|
gptkbp:oxidationNumber
|
0
|
|
gptkbp:oxidationStates
|
0
|
|
gptkbp:period
|
3
|
|
gptkbp:positionInPeriodicTable
|
group 18
period 3
|
|
gptkbp:radioactive
|
gptkb:37Ar
gptkb:39Ar
|
|
gptkbp:refractiveIndex
|
1.000281 (gas, 0 °C)
|
|
gptkbp:relatedGroup
|
noble gas
|
|
gptkbp:solubility
|
slightly soluble
|
|
gptkbp:source
|
fractional distillation of liquid air
|
|
gptkbp:standardState
|
gptkb:gasoline
|
|
gptkbp:stateAtRoomTemperature
|
gptkb:gasoline
|
|
gptkbp:symbol
|
gptkb:Ar
|
|
gptkbp:thermalConductivity
|
0.01772 W/(m·K)
|
|
gptkbp:thermalExpansion
|
0.00369 K−1 (at 273 K)
|
|
gptkbp:toxicity
|
non-toxic
|
|
gptkbp:triplePoint
|
83.8058 K, 68.89 kPa
|
|
gptkbp:uses
|
filling incandescent and fluorescent light bulbs
inert gas for chemical reactions
shielding gas in welding
|
|
gptkbp:vanDerWaalsRadius
|
188 pm
|
|
gptkbp:vaporPressure
|
6.43 kJ/mol
|
|
gptkbp:bfsParent
|
gptkb:Earth
gptkb:Sir_William_Ramsay
|
|
gptkbp:bfsLayer
|
4
|