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Tin
Block pPeriod 5Group 14solid at 20 °C
Configuration :[Kr] 4d¹⁰ 5s² 5p²
Atomic mass :118.71 u
French :Étain
Latin :Stannum
3D Bohr-model representation of the Tin atom (symbol Sn, atomic number Z=50). Electron shell configuration: 2, 8, 18, 18, 4 electrons.
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Bohr model · educational
Electron configuration
Full[Kr] 4d¹⁰ 5s² 5p²
Short[Kr] 4d¹⁰ 5s² 5p²
Valence electrons4
KLMNOPQ shells
K2
L8
M18
N18
O4
Electronegativity
Pauling1.96
Allen1.824
Mulliken (eV)—
Atomic radii
Empirical145 pm
Calculated145 pm
Covalent139 pm
Van der Waals217 pm
Ionic radii (Shannon-Prewitt)
+2118 pm
+469 pm
Successive ionisation energies
I₁708.6 kJ/mol
I₂1411.8 kJ/mol
I₃2943 kJ/mol
I₄3930.3 kJ/mol
I₅7456 kJ/mol
Electron affinity107.3 kJ/mol
Oxidation states
-4-3-2-10+1+2+3+4
Bold states = most common.