Atomic number 37 · alkali metal · Atomic mass 85.468 u
| Atomic Number | 37 |
| Atomic Mass | 85.4680 u |
| Category | alkali metal / 碱金属 |
| Group | 1 |
| Period | 5 |
| Block | S |
| Electron Configuration | [Kr] 5s¹ |
| Electronegativity (Pauling) | 0.82 |
| Phase at STP | Solid |
| Density | 1.532 g/cm³ |
| Year Discovered | 1861 |
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