Element Silicon (Si)

Atomic number 14 · metalloid · Atomic mass 28.085 u

Atomic Mass
28.0850 u
Element Properties
Atomic Number 14
Atomic Mass 28.0850 u
Category metalloid / 准金属
Group 14
Period 3
Block P
Electron Configuration [Ne] 3s² 3p²
Electronegativity (Pauling) 1.9
Phase at STP Solid
Density 2.329 g/cm³
Year Discovered 1824

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