| Attribute | Value |
|---|---|
| Symbol | Si |
| Standard state | Solid |
| Atomic mass | 28.085 u |
| Electron configuration | [Ne]3s²3p² |
| Oxidation states |
|
| Electronegativity (pauling scale) | 1.9 |
| Atomic radius (van der waals) | 210 pm |
| Ionization energy | 8.152 eV |
| Electron affinity | 1.385 eV |
| Melting point | 1687 K |
| Boiling point | 3538 K |
| Density | 2.3296 g/cm³ |
| Atomic number | 14 |
| Group name | Metalloid |
| Discovered | 1854 year |