Cl
Chlorine
Z 17 35.45 g/molHalogen
Nucleus
17 Protons
18 Neutrons
17 Electrons (7 Valence)
Shell distribution: K2 • L8 • M7 • 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]3s23p5
Oxidation States
CommonRare
0
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Radii
Empirical
100 pm1 Å
Calculated
79 pm0.79 Å
Covalent
102±4 pm1.02±0.04 Å
Van der Waals
175 pm1.75 Å
IonicCl-
181 pm1.81 Å
Crystal Structure
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Orthorhombic
Pearson symbol
oS8
Space group
Cmce No. 64