Na
Sodium
Z 11 22.99 g/molAlkali Metal
Nucleus
11 Protons
12 Neutrons
11 Electrons (1 Valence)
Shell distribution: K2 • L8 • M1 • 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]3s1
Oxidation States
CommonRare
0
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Radii
Empirical
180 pm1.8 Å
Calculated
190 pm1.9 Å
Covalent
166±9 pm1.66±0.09 Å
Van der Waals
227 pm2.27 Å
IonicNa+
102 pm1.02 Å
Crystal Structure
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Body-centered cubicStandard state
Pearson symbol
cI2
Space group
Im3m No. 229
Density
0.968 g/cm³