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Properties of Si

Properties of Si (Silicon):

Compound NameSilicon
Chemical FormulaSi
Molar Mass28.0855 g/mol
Physical properties
Density2.3291 g/cm³
Helium 0.0001786
Iridium 22.562
Melting1,414.00 °C
Helium -270.973
Hafnium carbide 3958
Boiling3,265.00 °C
Helium -268.928
Tungsten carbide 6000

Alternative Names

Thorium(II) silicide
silicon
thorium

Elemental composition of Si
ElementSymbolAtomic weightAtomsMass percent
SiliconSi28.08551100.0000
Mass Percent CompositionAtomic Percent Composition
Si: 100.00%
Si Silicon (100.00%)
Si: 100.00%
Si Silicon (100.00%)
Mass Percent Composition
Si: 100.00%
Si Silicon (100.00%)
Atomic Percent Composition
Si: 100.00%
Si Silicon (100.00%)
Identifiers
SMILES[Th].[Si]
Hill formulaSi

Sample reactions for Si
EquationReaction type
Si + S8 = Si2S4synthesis
Cr2O3 + Si = Cr + SiO2single replacement
Si + Cl2 = SiCl4synthesis
Si + O2 = SiO2synthesis
MgO + Si = Mg + SiO2single replacement

Related
Molecular weight calculator
Oxidation state calculator

Chemical Compound Properties Database

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