| Reactions of Niobium |
 Reactions with water |
| Niobium does not react with air under normal conditions as surface is protected by a thin oxide layer. |
| Reactions with air |
| Niobium does not react with air under normal conditions as surface is protected by a thin oxide layer. |
| Reactions with halogens |
| Niobium does react with the halogens upon warming to form niobium(V) halides. |
2Nb(s) + 5F2(g) NbF5(s) |
| 2Nb(s) + 5Cl2(g)NbCl5(s) |
| 2Nb(s) + 5Br2(g)NbBr5(s) |
| 2Nb(s) + 5I2(g)NbI5(s) |
| Reactions with acids |
| Niobium appears not to be attacked by many acids at room temperature but does dissolve in hydrofluoric acid, HF, or in a mixture
of HF and nitric acid, HNO3.
|
| Reactions with bases |
| Niobium metal is largely resistant to attack by molten alkali but will dissolve slowly. |
NbIII