Information

Cadmium (Cd) properties


Atomic mass, symbol and atomic number

cadmium is a naturally occurring element with the element symbol Cd and the atomic number 48. In the periodic table it stands with an atomic mass of 112.411 u in the 2nd subgroup. The chemical element discovered by Friedrich Stromeyer in 1817 is not radioactive and is in a solid state of aggregation at room temperature.

Profile: Cadmium (English cadmium)

General
Chemical element:cadmium
Symbol:CD
Atomic number:48
Group:zinc group
Period:5
Block:d-block
Series:Transition metals
Appearance:silver
explorers:Friedrich Stromeyer
Year of discovery:1817
Atomic properties
Atomic mass:112,411 u
Atomic radius:155 pm
Covalent radius:144 pm
Van der Waals radius:158 pm
Electron configuration:Kr 4d10 5s2
ionization:867.8 kJ / mol
Physical Properties
Physical state:firmly
Density:???
Crystal structure:hexagonal
Magnetism:diamagnetic
molar volume:13,00 · 10-6 m3/ mol
Mohs hardness:2,0
Melting point:321 ° C
Boiling point:765 ° C
Heat of fusion:6.3 kJ / mol
Heat of vaporization:100 kJ / mol
Thermal conductivity:97 W
Chemical properties
electronegativity:1,69

Did you know that ...

  • Cadmium is dangerous to the environment, extremely flammable and very toxic?
  • Carl Hermann and Friedrich Stromeyer discovered cadmium in 1817 at the same time?
  • the vast majority of the world's cadmium is used for batteries?