Cadmium (Cd)
Cadmium (Cd) is element 48 of the periodic table, a transition metal in period 5 and group 12. Its standard atomic weight is 112.414, so one mole of cadmium atoms has a mass of 112.414 g. At room temperature it is a solid; it melts at 321.07 °C and boils at 766.85 °C.
| Atomic number | 48 |
|---|---|
| Symbol | Cd |
| Standard atomic weight | 112.414 |
| Molar mass | 112.414 g/mol |
| Category | Transition metal |
| Group | 12 |
| Period | 5 |
| Block | d-block |
| Electron configuration | [Kr] 5s2 4d10 |
| Oxidation states | +2 |
| Electronegativity (Pauling) | 1.69 |
| Atomic radius (van der Waals) | 158 pm |
| First ionisation energy | 8.994 eV (867.8 kJ/mol) |
| Electron affinity | — |
| State at room temperature | Solid |
| Melting point | 594.22 K (321.07 °C) |
| Boiling point | 1040 K (766.85 °C) |
| Density | 8.69 g/cm³ |
| Discovered | 1817 |
Group 12
Calculate with Cadmium
Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.