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Cerium (Ce) properties


Atomic mass, symbol and atomic number

cerium is a natural element with the elemental symbol Ce and the atomic number 58. In the periodic table, it belongs to the lanthanides with an atomic mass of 140.116 u. The chemical element discovered by Berzelius and W. von Hisinger in 1803 is not radioactive and is in a solid state at room temperature.

Profile: Cer (Cerium)

General
Chemical element:cerium
Symbol:Ce
Atomic number:58
Group:lanthanides
Period:6
Block:f-block
Series:lanthanides
Appearance:silver
explorers:J. Berzelius and W. von Hisinger
Year of discovery:1803
Atomic properties
Atomic mass:140.116 u
Atomic radius:185 pm
Covalent radius:204 pm
Van der Waals radius:???
Electron configuration:Xe 4f1 5d1 6s2
ionization:534.4 kJ / mol
Physical Properties
Physical state:firmly
Density:???
Crystal structure:cubic
Magnetism:paramagnetic
molar volume:20,69 · 10-6 m3/ mol
Mohs hardness:2,5
Melting point:795 ° C
Boiling point:3470 ° C
Heat of fusion:5.5 kJ / mol
Heat of vaporization:398 kJ / mol
Thermal conductivity:11 W
Chemical properties
electronegativity:1,12

Did you know that ...

  • Cer was named after the dwarf planet Ceres?
  • even light sunshine is enough to set Cer on fire?
  • Cer also known as Cerium?
  • Cerium belongs to the metals of the rare earths?