Atomic number 44 · transition metal · Atomic mass 101.07 u
| Atomic Number | 44 |
| Atomic Mass | 101.0700 u |
| Category | transition metal / 过渡金属 |
| Group | 8 |
| Period | 5 |
| Block | D |
| Electron Configuration | [Kr] 4d⁷ 5s¹ |
| Electronegativity (Pauling) | 2.2 |
| Phase at STP | Solid |
| Density | 12.37 g/cm³ |
| Year Discovered | 1844 |
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