| Reactions of Neodymium |
 Reactions with water |
| Neodymium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form neodymium hydroxide
and hydrogen gas.
|
2Nd(s) + 6H2O(g) 2Nd(OH)3(aq) + 3H2(g) |
| Reactions with air |
| Neodymium tarnishes slowly in air and burns readily to form neodymium (III) oxide. |
| 4Nd + 3O22Nd2O3 |
| Reactions with halogens |
| Neodymium reacts with all the halogens to form neodymium(III) halides. |
| 2Nd(s) + 3F2(g)2NdF3(s) |
| 2Nd(s) + 3Cl2(g)2NdCl3(s) |
| 2Nd(s) + 3Br2(g)2NdBr3(s) |
| 2Nd(s) + 3I2(g)2NdI3(s) |
| Reactions with acids |
| Neodymium dissolves readily in dilute sulphuric acid to form solutions containing the lilac aquated Nd(III) ion together with hydrogen gas.
|
| 2Nd(s) + 3H2SO4(aq)2Nd3+(aq) + 3SO42-(aq) + 3H2(g) |
| |