Si
Silicon
Z 14 28.085 g/molMetalloid
Nucleus
14 Protons
14 Neutrons
14 Electrons (4 Valence)
Shell distribution: K2 • L8 • M4 • N0 • O0 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Ne]3s23p2
Radii
Empirical
110 pm1.1 Å
Calculated
111 pm1.11 Å
Covalent
111±2 pm1.11±0.02 Å
van Der Waals
210 pm2.1 Å
Oxidation States
CommonRare
-4
-3
-2
-1
0
0
+1
+2
+3
+4
Crystal Structure
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Diamond