Atomic number 45 · transition metal · Atomic mass 102.91 u
| Atomic Number | 45 |
| Atomic Mass | 102.9100 u |
| Category | transition metal / 过渡金属 |
| Group | 9 |
| Period | 5 |
| Block | D |
| Electron Configuration | [Kr] 4d⁸ 5s¹ |
| Electronegativity (Pauling) | 2.28 |
| Phase at STP | Solid |
| Density | 12.41 g/cm³ |
| Year Discovered | 1803 |
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