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Compounds | Reactions | Production
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| Reactions of Promethium |
 Reactions with acids |
| Promethium dissolves readily in dilute sulphuric acid to form solutions containing the pink aquated Pm(III) ion together with hydrogen gas. |
2Pm(s) + 3H2SO4(aq) 2Pm3+(aq) + 3SO42-(aq) + 3H2(g) |