cesium

GPTKB entity

Statements (56)
Predicate Object
gptkbp:instanceOf gptkb:chemical_compound
gptkbp:allotropes none
gptkbp:appearance silvery gold
gptkbp:atomicNumber 55
gptkbp:atomicRadius 265 pm
gptkbp:atomicWeight 132.90545
gptkbp:boilingPoint 671 °C
gptkbp:CASNumber 7440-46-2
gptkbp:category s-block element
gptkbp:crystalSystem body-centered cubic
gptkbp:density 1.93 g/cm³
gptkbp:discoveredBy gptkb:Gustav_Kirchhoff
gptkb:Robert_Bunsen
gptkbp:discoveredIn 1860
gptkbp:electronConfiguration [Xe] 6s1
gptkbp:electronegativity 0.79 (Pauling scale)
gptkbp:firstSpectroscopicallyDiscoveredElement true
https://www.w3.org/2000/01/rdf-schema#label cesium
gptkbp:ionizationEnergy 375.7 kJ/mol
gptkbp:isotopes gptkb:cesium-134
gptkb:cesium-135
cesium-137
cesium-133
gptkbp:magneticOrdering paramagnetic
gptkbp:mainIsotope cesium-133
gptkbp:majorCity gptkb:Canada
gptkb:China
gptkb:Zimbabwe
gptkbp:meltingPoint 28.5 °C
gptkbp:molarHeatCapacity 32.21 J/(mol·K)
gptkbp:mostStableOxidationState +1
gptkbp:namedAfter Latin caesius (sky blue)
gptkbp:naturalOccurrence pollucite mineral
gptkbp:oxidationStates +1
gptkbp:period 6
gptkbp:phaseAtSTP gptkb:stone
gptkbp:positionInPeriodicTable Group 1, Period 6
gptkbp:radioactive cesium-137
gptkbp:relatedGroup alkali metal
gptkbp:riskFactor radioactive isotopes are hazardous
highly reactive with water
gptkbp:solubility reacts violently
gptkbp:storage stored in mineral oil
gptkbp:symbol Cs
gptkbp:thermalConductivity 35.9 W/(m·K)
gptkbp:type highly reactive
gptkbp:uses gptkb:atomic_clocks
ion propulsion
photoelectric cells
gptkbp:bfsParent gptkb:Salt_Waste_Processing_Facility
gptkb:Bose-Einstein_condensate
gptkb:core-collapse_supernova
gptkb:The_Atomic_Clock
gptkb:cesium_atomic_clock
gptkb:Group_I
gptkbp:bfsLayer 6