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Metalloids · Group 14 · Period 3
Atomic properties
| Atomic number | 14 |
|---|---|
| Symbol | Si |
| Standard atomic weight | 28.085 |
| Classification | Metalloids |
| Group | 14 |
| Period | 3 |
| Block | p-block |
| Electron configuration | [Ne] 3s2 3p2 |
| Electronegativity (Pauling) | 1.90 |
| Common oxidation states | +4, -4 |
Physical properties
| Phase at 20 °C | Solid |
|---|---|
| Density | 2.329 g/cm³ |
| Melting point | 1414 °C |
| Boiling point | 3265 °C |
| Discovered | 1824 |
| CAS number | — |