Silicon
Metalloid
Silicon (Si) is a chemical element with atomic number 14, classified as a metalloid. At room temperature it is a solid. It was discovered in 1824 by Jöns Jacob Berzelius.
Properties
- Atomic number
- 14
- Atomic mass
- 28.085 u
- Category
- Metalloid
- Group
- 14
- Period
- 3
- Block
- p-block
- Electron configuration
- [Ne] 3s² 3p²
- Phase at STP
- Solid
- Density
- 2.3296 g/cm³
- Melting point
- 1687 K (1413.8 °C)
- Boiling point
- 3538 K (3264.8 °C)
- Electronegativity
- 1.9
- Atomic radius
- 111 pm
- Ionization energy
- 8.152 eV
- Discovery
- 1824 · Jöns Jacob Berzelius
Common uses
Computer chips, glass, solar panels, silicone products
Did you know?
Second most abundant element in Earth's crust and basis of computer technology.