SymbolSn
Latin nameStannum
Atomic number50
Period5
Element categoryMetals
Relative atomic mass118.710
GroupIV.A
Electronegativity
1.8
Oxidation numbers
2, 4
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2
Density [g/cm3]
7.29
State
Solid
Melting point [°C]
231.97
Boiling point [°C]
2270
Atomic radius [pm]
145
Covalent radius [pm]
141
Thermal conductivity [W m-1K-1]
66.6
Heat capacity [J K-1g-1]
0.228
Discovery
Antiquity
Hardness [Mohs scale]
1.8
Young's modulus [GPa]
50
Electrical conductivity [S m-1]
8.7 · 106
Electrical resistivity [10-6Ω.m]
0.126
Shear modulus [GPa]
18
1.st ionization energy [eV]
7.3438
2.nd ionization energy [eV]
14.632
3.rd ionization energy [eV]
30.502
Stable isotopes
10
Unstable isotopes
18