Rn
Radon
Z 86 222.0 g/molNoble Gas Radioactive
Nucleus
86 Protons
136 Neutrons
86 Electrons (8 Valence)
Shell distribution: K2 • L8 • M18 • N32 • O18 • P8 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Xe]4f145d106s26p6
Oxidation States
CommonRare
0
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Radii
Empirical
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Calculated
120 pm1.2 Å
Covalent
150 pm1.5 Å
Van der Waals
220 pm2.2 Å
Ionic
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Crystal Structure
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Face-centered cubic
Pearson symbol
cF4
Space group
Fm3m No. 225