30 - Zinc transition metal
Discovered by India in 1668
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.
Periodic table
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
| 3 | 18 | 2 in 3s + 6 in 3p + 10 in 3d |
| 4 | 2 | 2 in 4s |
Electron shells
silver-gray Appearance
65.4 u Atomic Mass
1.35 Å Atomic Radius
1.18k K Boiling Point
12 Group
2 Common Oxidation States
1.22 Å Covalent Radius
7.14 g/cm³ Density
−58 kJ/mol Electron Affinity
1s2 2s2 2p6 3s2 3p6 4s2 3d10 Electron Configuration
[Ar] 3d10 4s2 Electron Configuration (semantic)
1.65 Electronegativity
30 Electrons
9.39 eV First Ionization Energy
2 ICSD Oxidation States
906.4, 1733.3, 3833, 5731, 7970, 10400, 12900, 16800, 19600, 23000, 26400, 29990, 40490, 43800, 47300, 52300, 55900, 59700, 67300, 71200, 179100 kJ/mol Ionization Energies
693 K Melting Point
76 Mendeleev Number
25.5 J/(mol·K) Molar Heat
4 Number of Shells
35 Neutrons
30 Atomic Number
15 Number of Isotopes
1, 2 Oxidation States
4 Period
Solid Phase
30 Protons
2, 8, 18, 2 Electron Shell Occupations