|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:alternativeName
|
gptkb:cesium
|
|
gptkbp:appearance
|
silvery gold
|
|
gptkbp:atomicNumber
|
55
|
|
gptkbp:atomicRadius
|
265 pm
|
|
gptkbp:atomicWeight
|
132.90545196
|
|
gptkbp:block
|
s-block
|
|
gptkbp:boilingPoint
|
671 °C
|
|
gptkbp:CASNumber
|
7440-46-2
|
|
gptkbp:category
|
alkali metals
chemical elements
|
|
gptkbp:crystalSystem
|
body-centered cubic
|
|
gptkbp:density
|
1.93 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Gustav_Kirchhoff
gptkb:Robert_Bunsen
|
|
gptkbp:discoveredIn
|
1860
|
|
gptkbp:electricalConductivity
|
4.3 × 10^6 S/m
|
|
gptkbp:electronegativity
|
0.79 (Pauling scale)
|
|
gptkbp:firstIonizationEnergy
|
375.7 kJ/mol
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
caesium
|
|
gptkbp:isotopes
|
gptkb:Cs-133
|
|
gptkbp:IUPACName
|
gptkb:caesium
|
|
gptkbp:magneticOrdering
|
diamagnetic
|
|
gptkbp:majorCity
|
gptkb:Canada
gptkb:China
gptkb:Namibia
|
|
gptkbp:meltingPoint
|
28.5 °C
|
|
gptkbp:molarHeatCapacity
|
32.21 J/(mol·K)
|
|
gptkbp:namedAfter
|
Latin caesius (sky blue)
|
|
gptkbp:oxidationStates
|
+1
|
|
gptkbp:oxidizesInAir
|
yes
|
|
gptkbp:period
|
6
|
|
gptkbp:phaseAtSTP
|
gptkb:stone
|
|
gptkbp:positionInPeriodicTable
|
group 1, period 6
|
|
gptkbp:radioactive
|
gptkb:Cs-137
no (natural Cs-133)
|
|
gptkbp:reactsViolentlyWith
|
gptkb:water
|
|
gptkbp:relatedGroup
|
alkali metal
|
|
gptkbp:riskFactor
|
toxic
highly reactive
radioactive isotopes are hazardous
|
|
gptkbp:source
|
pollucite
|
|
gptkbp:storage
|
under mineral oil or inert atmosphere
|
|
gptkbp:symbol
|
Cs
|
|
gptkbp:thermalConductivity
|
35.9 W/(m·K)
|
|
gptkbp:type
|
highly reactive
|
|
gptkbp:uses
|
gptkb:atomic_clocks
ion propulsion
drilling fluids
photoelectric cells
|
|
gptkbp:bfsParent
|
gptkb:Cesium
|
|
gptkbp:bfsLayer
|
6
|