|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:abundanceInEarthsCrust
|
90 ppm
|
|
gptkbp:allotropes
|
none
|
|
gptkbp:appearance
|
silvery-white
|
|
gptkbp:atomicNumber
|
37
|
|
gptkbp:atomicRadius
|
248 pm
|
|
gptkbp:atomicWeight
|
85.4678
|
|
gptkbp:block
|
s-block
|
|
gptkbp:boilingPoint
|
688 °C
|
|
gptkbp:CASNumber
|
7440-17-7
|
|
gptkbp:category
|
metal
alkali metal
|
|
gptkbp:compounds
|
rubidium carbonate
rubidium chloride
rubidium nitrate
|
|
gptkbp:crystalSystem
|
body-centered cubic
|
|
gptkbp:density
|
1.532 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Gustav_Kirchhoff
gptkb:Robert_Bunsen
|
|
gptkbp:discoveredIn
|
1861
|
|
gptkbp:electronConfiguration
|
[Kr] 5s1
|
|
gptkbp:electronegativity
|
0.82 (Pauling scale)
|
|
gptkbp:firstIonizationEnergy
|
403 kJ/mol
|
|
gptkbp:firstIsolatedFrom
|
1861
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
rubidium
|
|
gptkbp:isotopes
|
gptkb:rubidium-87
gptkb:rubidium-85
|
|
gptkbp:IUPACName
|
gptkb:rubidium
|
|
gptkbp:magneticOrdering
|
paramagnetic
|
|
gptkbp:meltingPoint
|
39.31 °C
|
|
gptkbp:molarHeatCapacity
|
31.06 J/(mol·K)
|
|
gptkbp:namedAfter
|
Latin 'rubidus' (deep red)
|
|
gptkbp:naturalOccurrence
|
primordial
|
|
gptkbp:oxidationStates
|
+1
|
|
gptkbp:period
|
5
|
|
gptkbp:phaseAtSTP
|
gptkb:stone
|
|
gptkbp:positionInPeriodicTable
|
period 5, group 1
|
|
gptkbp:radioactive
|
gptkb:rubidium-87
|
|
gptkbp:relatedGroup
|
alkali metal
|
|
gptkbp:source
|
lepidolite
pollucite
|
|
gptkbp:storage
|
under oil or inert atmosphere
|
|
gptkbp:symbol
|
Rb
|
|
gptkbp:thermalConductivity
|
58.2 W/(m·K)
|
|
gptkbp:toxicity
|
mildly toxic
|
|
gptkbp:type
|
highly reactive with water
|
|
gptkbp:uses
|
gptkb:atomic_clocks
research in physics
specialty glasses
|
|
gptkbp:bfsParent
|
gptkb:Bose–Einstein_condensate
|
|
gptkbp:bfsLayer
|
5
|