14 Si
Metalloid
Silicon
Backbone of computer chips.
Properties of Silicon
- Atomic number (Z)
- 14
- Symbol
- Si
- Atomic mass
- 28.085 g/mol
- Category
- Metalloid
- Group
- 14
- Period
- 3
- Electron configuration
- [Ne] 3s² 3p²
- Electronegativity (Pauling)
- 1.9
- Atomic radius
- 111 pm
- First ionization energy
- 786 kJ/mol
- Melting point
- 1687 K (1413.8 °C)
- Boiling point
- 3538 K (3264.8 °C)
- Density
- 2.33 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1824