|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
silvery white
|
|
gptkbp:atomicNumber
|
59
|
|
gptkbp:atomicWeight
|
140.90766
|
|
gptkbp:block
|
f-block
|
|
gptkbp:boilingPoint
|
3793 K
|
|
gptkbp:CASNumber
|
7440-10-0
|
|
gptkbp:category
|
rare earth element
|
|
gptkbp:crystalSystem
|
hexagonal
|
|
gptkbp:density
|
6.77 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Carl_Auer_von_Welsbach
|
|
gptkbp:discoveredIn
|
1885
|
|
gptkbp:electronConfiguration
|
[Xe] 4f3 6s2
|
|
gptkbp:electronegativity
|
1.13 (Pauling scale)
|
|
gptkbp:foundIn
|
gptkb:bastnäsite
monazite
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Praseodymium
|
|
gptkbp:isotopes
|
Pr-141
|
|
gptkbp:meltingPoint
|
1208 K
|
|
gptkbp:mostStableIsotope
|
Pr-141
|
|
gptkbp:namedAfter
|
the Greek words 'prasios didymos' (green twin)
|
|
gptkbp:naturalOccurrence
|
gptkb:stone
|
|
gptkbp:oxidationStates
|
+3
|
|
gptkbp:period
|
6
|
|
gptkbp:radioactive
|
no
|
|
gptkbp:relatedGroup
|
lanthanide
|
|
gptkbp:symbol
|
Pr
|
|
gptkbp:uses
|
alloying agent
permanent magnets
carbon arc lighting
coloring glass and ceramics
|
|
gptkbp:bfsParent
|
gptkb:Lanthanide
|
|
gptkbp:bfsLayer
|
6
|