Silicon

Atomic Number: 14

Name: Silicon

Atomic symbol: Si

Atomic Weight: 28.0855

Electron affinity: -134 kJ/mol

Electron configuration: 1s²2s²2p⁶3s²3p²

Ionization energies: 786 kJ/mol

Pauling electronegativity: 1.8

Melting Point: 1410^oC

Boiling Point: 2355^oC

Density: 2.33 g/cm³

Covalent radius: 1.17 angstroms

Ionic radius: 2.71 angstroms (-4); 3.84 angstroms (-1); 0.65 angstroms (+1); 0.42 angstroms (+4)

Common oxidation states in compounds: -4, +4