Sn
Tin
Z 50 118.71 g/molPost-Transition Metal
Nucleus
50 Protons
69 Neutrons
50 Electrons (4 Valence)
Shell distribution: K2 • L8 • M18 • N18 • O4 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Kr]4d105s25p2
Oxidation States
CommonRare
0
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Radii
Empirical
145 pm1.45 Å
Calculated
145 pm1.45 Å
Covalent
139±4 pm1.39±0.04 Å
Van der Waals
217 pm2.17 Å
IonicSn2+
118 pm1.18 Å
Crystal Structure
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TetragonalStandard state
Pearson symbol
tI4
Space group
I41/amd No. 141
Density
7.265 g/cm³