Symbol | Cd | Atomic radius: pm | 149 | Fusion: kJ/Mole | 6.19 |
Name | Cadmium | Ionic radius: pm | (+2)95 | Boiling point: °C | 767 |
Atomic number | 48 | Electron affinity | Unst anion | Melting point: °C | 321 |
Atomic weight | 112.4 | 1st ion potential | 8.99 | Specific Heat Cap: J/(g K) | 0.23 |
Classification | Trans metal | Natural form | Solid | Thermal Cond: W/(cm K) | 0.97 |
Configuration | [Kr]4d105s2 | Crystal structure | Hex | Electrical Cond | 0.138 |
Oxidation states | 2 | Density | 8.69 | Abundance: mg/kg-crust | 0.15 |
Electronegativity | 1.69 | Vaporization: kJ/Mole | 99.87 | ||
Friedrich Strohmeyer discovered cadmium in 1817 in a sample of zinc carbonate, and independently, K.S.L. Hermann and J.C.H. Roloff found cadmium at the same time in a speciment of zinc oxide. | Uses - batteries, yellow pigment (in compound with sulfur), control rods and shields in nuclear reactors, TV tube phosphors |