Zn
Zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. It has a standard atomic weight of 65.38, sits in period 4 and group 12, and is classified as a transition metal.
Properties
| Symbol | Zn |
|---|---|
| Atomic number | 30 |
| Standard atomic weight | 65.38 |
| Category | Transition metal |
| Group | 12 |
| Period | 4 |
| Electron configuration | [Ar] 3d10 4s2 |
| Outer-shell electrons | 2 |
The figure of 65.38 is a standard atomic weight.
Compounds containing zinc
3 of the compounds in this reference contain Zn, listed by the fraction of their mass it makes up.
| Compound | Formula | Atoms | % by mass |
|---|---|---|---|
| zinc oxide | OZn | 1 | 80.3% |
| zinc chloride | Cl2Zn | 1 | 48.0% |
| zinc sulfate | O4SZn | 1 | 40.5% |
Calculate with zinc
- Molar mass of any formula containing it
- Electron configuration, including ions
- Effective nuclear charge by Slater's rules
- Average atomic mass from isotope abundances
Group 12
Atomic weights are the IUPAC 2021 standard values, abridged to the conventional five significant figures. Group, period, category and electron configuration are derived from the atomic number rather than stored, so they cannot drift out of step with it.