Cd
Cadmium
Cadmium is a chemical element with the symbol Cd and atomic number 48. It has a standard atomic weight of 112.41, sits in period 5 and group 12, and is classified as a transition metal.
Properties
| Symbol | Cd |
|---|---|
| Atomic number | 48 |
| Standard atomic weight | 112.41 |
| Category | Transition metal |
| Group | 12 |
| Period | 5 |
| Electron configuration | [Kr] 4d10 5s2 |
| Outer-shell electrons | 2 |
The figure of 112.41 is a standard atomic weight.
Compounds containing cadmium
1 of the compounds in this reference contain Cd, listed by the fraction of their mass it makes up.
| Compound | Formula | Atoms | % by mass |
|---|---|---|---|
| cadmium sulfide | CdS | 1 | 77.8% |
Calculate with cadmium
- 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.