Atomic number 21 · transition metal · Atomic mass 44.956 u
| Atomic Number | 21 |
| Atomic Mass | 44.9560 u |
| Category | transition metal / 过渡金属 |
| Group | 3 |
| Period | 4 |
| Block | D |
| Electron Configuration | [Ar] 3d¹ 4s² |
| Electronegativity (Pauling) | 1.36 |
| Phase at STP | Solid |
| Density | 2.985 g/cm³ |
| Year Discovered | 1879 |
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