Niobium
Electron Configuration
|
General Properties
| Atomic Symbol | Nb |
| Atomic Weight | 92.9064 g/mol |
| Element Number | 41 |
| Standard State | Solid |
| Standard Type | Stongly Basic |
| Date of Discovery | 1801 |
| Discoverer | Hatchett |
Physical Properties
| Oxidation States | 5, 3 |
| Boiling Point | 5015 K |
| Melting Point | 2742 K |
| Density | 8.57 g/cm³ |
| Electron Configuration | [Kr]4d4,5s1 |
| Acid/Base Properties | Acidic |
| Crystal Structure | Cubic, body centered |
| Electronegativity | 1.6 |
| Heat of Vaporization | 690.1 kJ/mol |
| Heat of Fusion | 26.9 kJ/mol |
| Electrical Conductivity | 6.6 10^6omg-¹cm-¹ |
| Thermal Conductivity | 53.7 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.265 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 6.88 |
| Atomic Volume | 10.80 cm³/mol |
| Atomic Radius | 1.46 Å |
| Covalent Radius | 1.34 Å |
| Synthetic | No |