Nb
Niobium
Element 41 · Transition metal · Period 5, Group 5
Solid · Discovered 1801
Atomic Properties
| Atomic Number | 41 |
| Atomic Mass | 92.90637u |
| Electron Configuration | [Kr]5s1 4d4 |
| Electronegativity | 1.6Pauling |
| Atomic Radius | 207pm |
| Ionization Energy | 6.759eV |
| Electron Affinity | 0.893eV |
| Oxidation States | +5, +3 |
Physical Properties
| Standard State | Solid |
| Melting Point | 2750K |
| Boiling Point | 5017K |
| Density | 8.57g/cm³ |
| Group Block | Transition metal |
| Year Discovered | 1801 |