Silicon
Si Molar Mass Conversion in Batch
Elem.
Total
Name
Atomic Mass
(g/mol)
Percentage
Mass
Si
1
Silicon
28.0855
100%
28.09
→ Si
Total: 28.0855 (g/mol)
Silicon element has 14 protons, 14 neutrons and 14 electrons. It is solid metalloid
at room temperature, melting point 1414 ̊C. Silicon is critical for semiconductor industry.
Silicon dioxide SiO2 is the main component of glass.
» Common Silicon compounds:
• Silicon(IV) Dioxide, SiO2
• Silicon Tetrafluoride, SiF4
• Silicon Nitride, Si3N4
• Silicon(IV) Sulfate, Si(SO4)2
• Silicon Monoxide, SiO
• Silicic Acid, H2SiO3
• Sodium Silicate, Na2SiO3
Example Reactions:
• 4HF + Si = SiF4 + 2H2
• Si + 2Cl2 = SiCl4
• Si + 2F2 = SiF4
• SiCl4 + 2Mg = 2MgCl2 + Si
• Na2SiF6 + 4Na = Si + 6NaF
• SiCl4 + 2H2 = Si + 4HCl
• SiO2 + 2C = Si + 2CO
• 2MgO + Si = 2Mg + SiO2
• Si + 2NaOH + H2O = Na2SiO3 + 2H2
• SiH4 = Si + 2H2
