Silicon (Si)

A hard, brittle crystalline solid with a blue-grey metallic lustre.

It's the main component of sand and computer chips.

Element properties

Atomic number
14
Symbol
Si
Atomic mass
28.085 u
Category
Metalloid
Period
3
Group
14
Block
p
State
Solid
Electron configuration
[Ne] 3s2 3p2
Electronegativity (Pauling)
1.9
Density
2.329 g/cm³
Melting point
1414 °C
Boiling point
3265 °C

Uses