Atomic number 12 · alkaline earth · Atomic mass 24.305 u
| Atomic Number | 12 |
| Atomic Mass | 24.3050 u |
| Category | alkaline earth / 碱土金属 |
| Group | 2 |
| Period | 3 |
| Block | S |
| Electron Configuration | [Ne] 3s² |
| Electronegativity (Pauling) | 1.31 |
| Phase at STP | Solid |
| Density | 1.738 g/cm³ |
| Year Discovered | 1755 |
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