Statements (39)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:chemical_compound
|
| gptkbp:alternativeName |
gptkb:niobium
|
| gptkbp:appearance |
gray metallic
|
| gptkbp:atomicNumber |
41
|
| gptkbp:boilingPoint |
4744°C
|
| gptkbp:CASNumber |
7440-03-1
|
| gptkbp:category |
transition metal
|
| gptkbp:density |
8.57 g/cm³
|
| gptkbp:discoveredBy |
gptkb:Charles_Hatchett
|
| gptkbp:discoveredIn |
1801
|
| gptkbp:foundIn |
gptkb:United_Kingdom
columbite pyrochlore |
| https://www.w3.org/2000/01/rdf-schema#label |
columbium
|
| gptkbp:isotopes |
gptkb:Nb-93
|
| gptkbp:IUPACName |
gptkb:niobium
|
| gptkbp:meltingPoint |
2477°C
|
| gptkbp:namedAfter |
gptkb:Columbia
|
| gptkbp:namedChangedByIUPAC |
1950
|
| gptkbp:oxidationStates |
+1
+2 +3 +5 +4 |
| gptkbp:periodicTableGroup |
5
|
| gptkbp:radioactive |
Nb-100
Nb-92 Nb-94 Nb-95 Nb-97 Nb-98 |
| gptkbp:standardState |
gptkb:stone
|
| gptkbp:stateAtRoomTemperature |
gptkb:stone
|
| gptkbp:symbol |
gptkb:Nb
|
| gptkbp:usedIn |
superconducting magnets
superalloys steel alloys |
| gptkbp:bfsParent |
gptkb:niobium
|
| gptkbp:bfsLayer |
7
|