|
gptkbp:instanceOf
|
gptkb:chemical_series
|
|
gptkbp:abundance
|
not especially rare
|
|
gptkbp:alsoKnownAs
|
gptkb:lanthanoids
|
|
gptkbp:atomicNumber
|
57-71
|
|
gptkbp:characteristic
|
rare earth elements
silvery-white metals
|
|
gptkbp:color
|
mostly colorless or pale
|
|
gptkbp:containsElement
|
gptkb:gadolinium
gptkb:terbium
gptkb:praseodymium
cerium
europium
lanthanum
neodymium
samarium
dysprosium
erbium
holmium
lutetium
thulium
ytterbium
promethium
|
|
gptkbp:discoveredBy
|
gptkb:Carl_Gustaf_Mosander
|
|
gptkbp:discoveryPeriod
|
gptkb:19th_century
|
|
gptkbp:firstLine
|
lanthanum
|
|
gptkbp:ionicRadiusTrend
|
lanthanide contraction
|
|
gptkbp:lastElement
|
lutetium
|
|
gptkbp:magnetType
|
paramagnetic
|
|
gptkbp:mineralSource
|
gptkb:bastnäsite
monazite
|
|
gptkbp:oxidationStates
|
+3
|
|
gptkbp:periodicTableGroup
|
f-block
|
|
gptkbp:positionInPeriodicTable
|
period 6
|
|
gptkbp:property
|
high melting points
high magnetic susceptibility
form trivalent cations
|
|
gptkbp:radioactive
|
promethium
|
|
gptkbp:separationDifficulty
|
chemically similar
|
|
gptkbp:solubility
|
form insoluble hydroxides
|
|
gptkbp:type
|
oxidize in air
react with water
|
|
gptkbp:usedIn
|
optical devices
nuclear reactors
lasers
petroleum refining
catalysts
alloys
phosphors
magnets
glass coloring
|
|
gptkbp:bfsParent
|
gptkb:actinide_elements
|
|
gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
lanthanide elements
|