48Cd112.41
Cadmium (Cd)
Element 48 Ā· Transition metal
Cadmium (Cd) is a chemical element with atomic number 48. It is classified as a transition metal in period 5, group 12 of the periodic table (the d-block). Its standard atomic weight is 112.41 u and its ground-state electron configuration is [Kr] 4dĀ¹ā° 5sĀ².
Cadmium facts
| Atomic number (Z) | 48 |
|---|---|
| Symbol | Cd |
| Standard atomic weight | 112.41 u |
| Category | Transition metal |
| Group | 12 |
| Period | 5 |
| Block | d-block |
| Electron configuration | [Kr] 4dĀ¹ā° 5sĀ² |
| Electronegativity (Pauling) | 1.69 |
| State at 20 Ā°C | Solid |
| Protons / electrons | 48 / 48 |
| Neutrons (most common isotope, approx.) | 64 |
| Molar mass | 112.41 g/mol |