|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:alloyedWith
|
iron
nickel
titanium
zirconium
|
|
gptkbp:alternativeName
|
gptkb:columbium
|
|
gptkbp:appearance
|
gray metallic
|
|
gptkbp:atomicNumber
|
41
|
|
gptkbp:block
|
d-block
|
|
gptkbp:boilingPoint
|
5017 K
|
|
gptkbp:CASNumber
|
7440-03-1
|
|
gptkbp:category
|
transition metal
|
|
gptkbp:crystalSystem
|
body-centered cubic
|
|
gptkbp:density
|
8.57 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Charles_Hatchett
|
|
gptkbp:discoveredIn
|
1801
|
|
gptkbp:electricalResistivity
|
152 nΩ·m (20 °C)
|
|
gptkbp:electronegativity
|
1.6 (Pauling scale)
|
|
gptkbp:firstIsolatedFrom
|
gptkb:Christian_Wilhelm_Blomstrand
|
|
gptkbp:firstIsolationYear
|
1864
|
|
gptkbp:foundIn
|
columbite
pyrochlore
|
|
gptkbp:hardnessMohs
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
niobium
|
|
gptkbp:isotopes
|
gptkb:Nb-93
|
|
gptkbp:IUPACName
|
gptkb:niobium
|
|
gptkbp:magneticOrdering
|
paramagnetic
|
|
gptkbp:mainOxide
|
gptkb:niobium(V)_oxide
|
|
gptkbp:majorCity
|
gptkb:Brazil
gptkb:Canada
|
|
gptkbp:meltingPoint
|
2750 K
|
|
gptkbp:molecularWeight
|
92.90638 u
|
|
gptkbp:namedAfter
|
gptkb:Niobe
|
|
gptkbp:oxidationStates
|
+2
+3
+5
|
|
gptkbp:period
|
5
|
|
gptkbp:radioactive
|
gptkb:standard
|
|
gptkbp:relatedGroup
|
5
|
|
gptkbp:standardState
|
gptkb:stone
|
|
gptkbp:symbol
|
gptkb:Nb
|
|
gptkbp:thermalConductivity
|
53.7 W/(m·K)
|
|
gptkbp:uses
|
gptkb:jewelry
gptkb:steel
welding
superconducting magnets
superalloys
|
|
gptkbp:website
|
https://www.rsc.org/periodic-table/element/41/niobium
|
|
gptkbp:bfsParent
|
gptkb:Lovozero_Massif
gptkb:Charles_Hatchett
gptkb:core-collapse_supernova
gptkb:coltan
gptkb:transition_metals
|
|
gptkbp:bfsLayer
|
6
|