|
gptkbp:instanceOf
|
gptkb:chemical_series
|
|
gptkbp:abundance
|
not rare in Earth's crust
|
|
gptkbp:alsoKnownAs
|
lanthanide
|
|
gptkbp:atomicNumber
|
57-71
|
|
gptkbp:characteristic
|
silvery-white metals
|
|
gptkbp:containsElement
|
gptkb:gadolinium
gptkb:terbium
gptkb:praseodymium
cerium
europium
lanthanum
neodymium
samarium
dysprosium
erbium
holmium
lutetium
thulium
ytterbium
promethium
|
|
gptkbp:crystalSystem
|
hexagonal close-packed
|
|
gptkbp:discoveredBy
|
various chemists
|
|
gptkbp:discoveryPeriod
|
gptkb:19th_century
|
|
gptkbp:elementGroup
|
rare earth elements
|
|
gptkbp:firstLine
|
lanthanum
|
|
gptkbp:ionicRadiusTrend
|
decreases with atomic number (lanthanide contraction)
|
|
gptkbp:lastElement
|
lutetium
|
|
gptkbp:locationOnPeriodicTable
|
period 6
|
|
gptkbp:magnetType
|
paramagnetic
|
|
gptkbp:namedAfter
|
lanthanum
|
|
gptkbp:oxidationStates
|
+3
|
|
gptkbp:periodicTableGroup
|
f-block
|
|
gptkbp:property
|
high reactivity
form trivalent cations
tarnish in air
|
|
gptkbp:radioactive
|
promethium
|
|
gptkbp:separationDifficulty
|
chemically similar
|
|
gptkbp:usedIn
|
nuclear reactors
catalysts
alloys
phosphors
magnets
|
|
gptkbp:bfsParent
|
gptkb:Lanthanide
|
|
gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
lanthanoid
|