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镤
镤下載化學應用程式以查看有關化學元素的更多信息:
| 原子序數 | 91 |
| 族 | VB |
| 元素周期 | 7 |
| 質量 | 231.03587 |
| 拉丁名 | Protactinium |
| 電子組態 | [Rn]5f2 6d7s2 |
| 氧化態 | 0, 2, 3, 4, 5 |