| General |
|---|
| Name | Silicon | | Symbol | Si | | Number | 14 | | Chemical series | Metalloids | | Group / Period | 14 / 3 | | Block | p-block | | CAS registry number | 7440-21-3 |
| Physical properties |
|---|
| State | solid | | Density | 2.33 g/cm3 | | Melting point | 1693 K (1420 °C, 2577 °F) | | Boiling point | 3538 K (3265°C, 5909°F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 28.0855 g/mol | | Crystal structure | diamond cubic | | Electronegativity | 1.90 | | Atomic radius | 110 pm | | Atomic radius (calculated) | 111 pm | | Electron configuration | [Ne] 3s2 3p2 | | Electrons per shell | 2, 8, 4 | | Number of protons | 14 | | Number of neutrons | 14 |
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Phosphorus