Silicon (Si)

Symbol Si
Atomic Number 14
Atomic Mass 28.0855 g.mol -1
Discovered by Jöns Jacob Berzelius in 1824

Chemical Properties of Silicon

Group 14 Melting point 1414°C, 2577°F, 1687 K
Period 3 Boiling point 3265°C, 5909°F, 3538 K
Block p Density (g cm−3) 2.3296
Atomic number 14 Relative atomic mass 28.085  
State at 20°C Solid Key isotopes 28Si, 30Si
Electron configuration [Ne]3s3p2 CAS number 7440-21-3
ChemSpider ID 4574465 ChemSpider is a free chemical structure database

What is Silicon?

  • Silicon (Si) is a close relative of carbon (C) in the periodic table.
  • The element could be traced universally in our world but is not found individually in our environment.

Uses of Silicon

  • The element is a major constituent in ceramics and bricks.
  • Being a semiconductor, the element is put into use for making transistors.
  • Silicon is used in a different manner in computer chips and solar cells.

Properties of Silicon

  • Silicon could be found attached to other elements, for instance, oxygen (O).
  • Silicates are the rocks which contain both silicon and oxygen.
  • When decontaminated, it is a grayish crystal that looks metallic.
  • Although it may be glistening like metal, it is not a metal.

Certain Facts About Silicon

  • Silicon was isolated and forced to develop its first crystals in the year 1854.
  • In the periodic table, one can find silicon just underneath carbon in the third row of the periodic table.
  • Silicon’s electrons are arranged in a makeup comparable to carbon.

Practise This Question

In which case evaporation of water will be faster i.e. near the sea or far away from a sea?