30Solid
Zn 65.38 Atomic mass · uTransition metals
Zinc
Zinc, in commerce also spelter, is a chemical element with symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium:its ion is of similar size and its only common oxidation state is +2.
Discovery 1746 (India)
K2L8M18N2
Physical properties
Values for the element in its standard state.
- Density
- 7.14g/cm³
- Melting point
- 693K
- Boiling point
- 1,180K
- Atomic radius
- 131pm
- Bonding type
- Metallic
- Molar heat
- 25.47J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons;
[Ar] represents 18 core electrons. The full view shows them explicitly.
30 electrons Orbital order preserved from source
- Electronegativity
- 1.65Pauling scale
- First ionization energy
- 906kJ/mol
- Electron affinity
- 0kJ/mol
- Van der Waals radius
- 139pm
Zn ZincAtomic number 30
906kJ/mol
Atomic numberGaps indicate unavailable data
About zinc
- Appearance
- Silver-gray
- Discovery
- 1746 (India)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.