Niobium (Nb)
Niobium
Niobium (Nb) is a transition metal in period 5, group 5. Its relative atomic mass is 92.906 and the molar mass of the atom is 92.906 g/mol.
Atomic number 41
Atomic mass 92.906
Molar mass 92.906 g/mol
Category Transition metal Solid
Properties of niobium
| Atomic number | 41 |
|---|---|
| Symbol | Nb |
| Latin name | Niobium |
| Relative atomic mass | 92.906 |
| Molar mass | 92.906 g/mol |
| Group, period, block | 5, 5, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Kr] 4d⁴ 5s¹ |
| Electronegativity (Pauling) | 1.6 |
| Atomic radius | 145 pm |
Electron configuration of niobium
Electrons per shell
K2L8M18N12O1
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁴ 5s¹
Noble-gas notation
41 protons · 41 electrons[Kr] 4d⁴ 5s¹
Formula and compounds of niobium
Simple substanceNbniobiumMolar mass of Nb: 92.906 g/mol
Chemistry not clicking? Try a lesson with a tutor
1-to-1 online chemistry lessons for KS3, GCSE and A-level. Your first lesson is a free trial.
Frequently asked questions
The relative atomic mass of niobium is 92.906, so the molar mass of the atom is 92.906 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁴ 5s¹. Noble-gas notation: [Kr] 4d⁴ 5s¹.