14 Si Silicon 28.085 u

Silicon

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Period
3
Group
14
Block
p-block
Phase (STP)
Solid

Silicon is the second most abundant element in Earth's crust after oxygen. It is the foundation of modern electronics and semiconductor technology.

Appearance: Crystalline, reflective with bluish tinge

Physical Properties

Atomic Mass 28.085 u
Density 2.3296 g/cm³
Melting Point 1413.8 °C
Boiling Point 3264.8 °C
Phase at STP Solid
Atomic Radius 111.0 pm

Electronic Properties

Electronegativity 1.9
Ionization Energy 786.5 eV
Electron Affinity 133.6 eV
Valence Electrons 4

Electron Configuration

Configuration [Ne] 3s² 3p²

Electron Shell Configuration

Silicon electron shell configuration Si 2e⁻ 8e⁻ 4e⁻

Position in Periodic Table

Silicon position in the periodic table Si

Discovery

Discovered by: Jons Jacob Berzelius
Year: 1824

Periodic Table

Lanthanides Actinides

Compounds Containing Silicon

More Metalloid

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Frequently Asked Questions

What is Silicon?
Silicon (Si) is a chemical element with atomic number 14. It is a solid at standard temperature and pressure, classified as a metalloid.
What are the key properties of Silicon?
Silicon has an atomic mass of 28.085 u, density of 2.3296 g/cm³, melting point of 1413.8°C, boiling point of 3264.8°C.
What is the electron configuration of Silicon?
The electron configuration of Silicon is [Ne] 3s2 3p2. It is in the p-block of the periodic table.
Who discovered Silicon?
Silicon was discovered by Jons Jacob Berzelius in 1824.
What is the electronegativity of Silicon?
Silicon has an electronegativity of 1.9 on the Pauling scale.