41Nb92.906
Niobium (Nb)
Element 41 Ā· Transition metal
Niobium (Nb) is a chemical element with atomic number 41. It is classified as a transition metal in period 5, group 5 of the periodic table (the d-block). Its standard atomic weight is 92.906 u and its ground-state electron configuration is [Kr] 4dā“ 5sĀ¹.
Niobium facts
| Atomic number (Z) | 41 |
|---|---|
| Symbol | Nb |
| Standard atomic weight | 92.906 u |
| Category | Transition metal |
| Group | 5 |
| Period | 5 |
| Block | d-block |
| Electron configuration | [Kr] 4dā“ 5sĀ¹ |
| Electronegativity (Pauling) | 1.6 |
| State at 20 Ā°C | Solid |
| Protons / electrons | 41 / 41 |
| Neutrons (most common isotope, approx.) | 52 |
| Molar mass | 92.906 g/mol |