| Symbol |
Nb |
|
| Atomic Number |
41 |
Relative Atomic Mass
12C = 12.0000 |
92.90638 |
Atomic Radius
pm |
143 |
First Ionisation Energy
kJ mol-1 |
664 |
| Electronegativity |
1.6 |
Density
kg m-3 |
8570 [293 K]
7830 [l., m.p.] |
Molar Volume
cm3 |
10.84 |
Thermal Conductivity
W m-1 K-1 |
53.7 [300 K] |
Melting Point
K |
2741 |
Boiling Point
K |
5015 |
| Number of Isotopes |
31 |
Ground State Electron
Configuration |
[Kr]4d45s1 |
| Term Symbol |
6D1/2 |
| Discovery |
Discovered by C. Hatchett (London, England) in 1801 |
| Name Derived From |
Greek Niobe (daughter of Tantalus) |
Name in Other
Languages |
 Croatian | Niobij |
 Danish | niobium |
 Dutch | niobium |
 Finnish | niobium |
 French | niobium |
 German | Niob |
 Italian | niobio |
 Norwegian | niob |
 Portuguese | nióbio |
 Spanish | niobio |
 Swedish | niob |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
