|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
silvery gold
|
|
gptkbp:atomicNumber
|
55
|
|
gptkbp:boilingPoint
|
671 °C
|
|
gptkbp:CASNumber
|
7440-46-2
|
|
gptkbp:category
|
metal
element
alkali metal
|
|
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)
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Cesio
|
|
gptkbp:isotopes
|
gptkb:Cs-133
gptkb:Cs-135
gptkb:Cs-134
gptkb:Cs-137
|
|
gptkbp:magneticOrdering
|
diamagnetic
|
|
gptkbp:majorCity
|
gptkb:Canada
gptkb:Namibia
gptkb:Zimbabwe
|
|
gptkbp:massNumber
|
132.90545 u
|
|
gptkbp:meltingPoint
|
28.5 °C
|
|
gptkbp:molarHeatCapacity
|
0.242 J/g·K
|
|
gptkbp:mostStableIsotope
|
gptkb:Cs-133
|
|
gptkbp:namedAfter
|
Latin caesius (sky blue)
|
|
gptkbp:naturalOccurrence
|
trace amounts in minerals
|
|
gptkbp:oxidationStates
|
+1
|
|
gptkbp:period
|
6
|
|
gptkbp:positionInPeriodicTable
|
Group 1, Period 6
|
|
gptkbp:radioactive
|
gptkb:Cs-137
yes (some isotopes)
|
|
gptkbp:relatedGroup
|
alkali metal
|
|
gptkbp:riskFactor
|
highly reactive with water
toxic in some isotopic forms
|
|
gptkbp:source
|
pollucite mineral
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:stateAtRoomTemperature
|
gptkb:stone
|
|
gptkbp:symbol
|
Cs
|
|
gptkbp:thermalConductivity
|
35.9 W/(m·K)
|
|
gptkbp:uses
|
gptkb:atomic_clocks
ion propulsion
photoelectric cells
|
|
gptkbp:bfsParent
|
gptkb:Andora
|
|
gptkbp:bfsLayer
|
7
|