Niobium (Nb) — Element 41: Properties & Data
Niobium (Nb) is a transition metal with atomic number 41 and atomic mass 92.906. It has melting point 2750 K (2477 °C), boiling point 5017 K (4744 °C), density 8.57 g/cm³. It sits in group 5 and period 5 of the periodic table and was discovered in 1801.
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Key facts
| Atomic mass | 92.906 u |
|---|---|
| Electron configuration | [Kr]5s1 4d4 |
| Oxidation states | +5, +3 |
| Electronegativity (Pauling) | 1.6 |
| Atomic radius (van der Waals) | 207 pm |
| Ionization energy | 6.759 eV |
| Electron affinity | 0.893 eV |
| Melting point | 2750 K |
| Boiling point | 5017 K |
| Density | 8.57 g/cm³ |
| Standard state | Solid |
| Discovered | 1801 |
Domande frequenti
What is the electron configuration of niobium?
The ground-state electron configuration of niobium is [Kr]5s1 4d4.
What group and period is niobium in?
Niobium (Nb) is in group 5 and period 5 of the periodic table, classified as a transition metal.
What is the melting point of niobium?
Niobium melts at 2750 K (2477 °C).
What is the standard state of niobium?
Niobium is a solid at standard temperature and pressure.
Related elements
Informazioni su questi dati: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .