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Silicon (Si)
Atomic number: 14 · Category: metalloid · Group 14 · Period 3 · Phase: Solid
Silicon is a chemical element with symbol Si and atomic number 14. It is a tetravalent metalloid, more reactive than germanium, the metalloid directly below it in the table. Controversy about silicon's character dates to its discovery.
Atomic mass: 28.085
Density: 2.329
Melting point: 1687 K
Boiling point: 3538 K
Appearance: crystalline, reflective with bluish-tinged faces
Source: Wikipedia
Block: p
Molar heat: 19.789
CPK color:#f0c8a0
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p2
Configuration (semantic): [Ne] 3s2 3p2
Shells: 2, 8, 4
Electronegativity (Pauling): 1.9
Electron affinity: 134.0684
Ionization energies: 786.5, 1577.1, 3231.6, 4355.5, 16091, 19805, 23780, 29287, 33878, 38726, 45962, 50502, 235196, 257923
Periodic position
Group: 14
Period: 3
xpos: 14
ypos: 3
Spectral/Bohr images
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3D Model