Atomic Properties
- Atomic Number
- 14
- Atomic Mass
- 28.0850 u
- Electron Configuration
- [Ne] 3s2 3p2
- Electronegativity
- 1.90
- Block
- p-block
- Group
- 14
- Period
- 3
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1687.00 K
- Boiling Point
- 3538.00 K
- Density
- 2.3290 g/cm³
About Silicon
Semiconductor; basis of computer chips; second most abundant element in crust.
Isotopes of Silicon
Silicon has 3 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 28Si | 28 | 27.97692653 | 92.22% | Stable |
| 29Si | 29 | 28.97649466 | 4.685% | Stable |
| 30Si | 30 | 29.97377014 | 3.092% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)