Silicon (Si), element 14 – Learn Acer periodic table

Silicon

Metalloid, atomic number 14.

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.

Facts

Symbol Si. Atomic mass 28.085 u. Group 14, period 3. Electron configuration [Ne] 3s2 3p2. Electrons per shell 2, 8, 4. State at room temperature: Solid. Melting point 1413.8 °C, boiling point 3264.8 °C. Discovered by Jöns Jacob Berzelius.

Element data from Wikipedia, CC BY-SA 3.0.