SymbolZn
Latin nameZincum
Atomic number30
Period4
Element categoryTransition elements
Relative atomic mass65.39
GroupII.B
Electronegativity
1.6
Oxidation numbers
2
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2
Density [g/cm3]
7.14
State
Solid
Melting point [°C]
419.58
Boiling point [°C]
907
Atomic radius [pm]
142
Covalent radius [pm]
131
Thermal conductivity [W m-1K-1]
116
Heat capacity [J K-1g-1]
0.388
Discovery
1530
Hardness [Mohs scale]
2.5
Brinell hardness [MPa]
412
Young's modulus [GPa]
108
Electrical conductivity [S m-1]
1.69 · 107
Electrical resistivity [10-6Ω.m]
0.0596
Shear modulus [GPa]
43
1.st ionization energy [eV]
9.3941
2.nd ionization energy [eV]
17.964
3.rd ionization energy [eV]
39.722
Stable isotopes
5
Unstable isotopes
10