| Property | Value |
|---|---|
| Atomic number | 14 |
| Atomic weight | 28.08553 amu |
| Element family | Semi-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 28Si: 92.23%, 29Si: 4.67%, 30Si: 3.10% |
| Previous element | Aluminum |
| Next element | Phosphorus |
| Density | 2.3296 g/cm3 (STP) |
| Melting | 1410 °C |
| Boiling | 2355 °C |
| Covalent radius | 1.16 Å |
| Van der Waals radius | 2.1 Å |
| Ionic radius | 0.4 Å |
| First ionization potential | 8.151 eV |
| Electron affinity | 1.390 eV |
| Electronegativity | 1.9 |
| Discovery year | 1823 |
Silicon is an element number 14 from semi-metals family. Its symbol is Si. Silicon atomic weight is 28.08553 amu. Si stable and long lived isotopes are 28Si: 92.23%, 29Si: 4.67%, 30Si: 3.10%. Silicon electronic configuration is 1s22s22p63s23p2. Sample compounds that contain Silicon are SiO2, Na2SiO3, SiCl4, SiF4, SiC, SiH4.
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