The Periodic Table of Elements
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14
Si
Silicon
Summary
Silicon is a chemical element with symbol Si and atomic number 14. It is a tetravalent metalloid, more reactive than germanium, the metalloid directly below it in the table. Controversy about silicon's character dates to its discovery.
Block: p
Period: 3
Group: 14
Atomic Mass: 28.085 g/mol (amu)
Discovered By: Jöns Jacob Berzelius
Phase: Solid
Boiling Point: 3538 K
Melting Point: 1687 K
Type: metalloid
Density: 2.329 g/cm3
Electron Configuration: 1s2 2s2 2p6 3s2 3p2
Electron Configuration (Semantic): [Ne] 3s2 3p2