Terbium

URI: https://gptkb.org/entity/Terbium
GPTKB entity
Statements (37)
Predicate Object
gptkbp:instanceOf gptkb:chemical_compound
gptkbp:appearance silvery-white
gptkbp:atomicNumber 65
gptkbp:atomicWeight 158.92535
gptkbp:block f-block
gptkbp:boilingPoint 3230 K
gptkbp:CASNumber 7440-27-9
gptkbp:category rare earth element
gptkbp:crystalSystem hexagonal
gptkbp:density 8.23 g/cm³
gptkbp:discoveredBy gptkb:Carl_Gustaf_Mosander
gptkbp:discoveredIn 1843
gptkbp:electronConfiguration [Xe] 4f9 6s2
gptkbp:electronegativity 1.2 (Pauling scale)
gptkbp:foundIn gptkb:Sweden
https://www.w3.org/2000/01/rdf-schema#label Terbium
gptkbp:isotopes gptkb:Tb-158
gptkb:Tb-159
Tb-157
gptkbp:magneticOrdering paramagnetic
gptkbp:meltingPoint 1356 K
gptkbp:namedAfter gptkb:Ytterby
gptkbp:naturalOccurrence gptkb:stone
gptkbp:oxidationStates +3
+4
gptkbp:period 6
gptkbp:radioactive non-radioactive
gptkbp:relatedGroup lanthanide
gptkbp:source gptkb:bastnäsite
monazite
gptkbp:symbol gptkb:Tb
gptkbp:uses fluorescent lamps
alloys
solid-state devices
phosphors in color TV tubes
gptkbp:bfsParent gptkb:Lanthanide
gptkbp:bfsLayer 6