Optional

Californium (CF) properties


Atomic mass, symbol and atomic number

californium is an artificially created element with the element symbol Cf and atomic number 98. In the periodic table it belongs to the actinoids with an atomic mass of 251 u. The chemical element discovered by Glenn T. Seaborg in 1950 is radioactive and is in a solid state of aggregation at room temperature.

Profile: Californium (English Californium)

General
Chemical element:californium
Symbol:Cf
Atomic number:98
Group:actinides
Period:7
Block:f-block
Series:actinides
Appearance:Gray
explorers:Glenn T. Seaborg
Year of discovery:1950
Atomic properties
Atomic mass:251 u
Atomic radius:186 pm
Covalent radius:225 pm
Van der Waals radius:unknown
Electron configuration:Rn 5f10 7s2
ionization:608 kJ / mol
Physical Properties
Physical state:firmly
Density:15.1 g / cm3
Crystal structure:hexagonal
Magnetism:unknown
molar volume:16,50 · 10-6 m3/ mol
Mohs hardness:unknown
Melting point:900 ° C
Boiling point:1470 ° C
Heat of fusion:unknown
Heat of vaporization:unknown
Thermal conductivity:unknown
Chemical properties
electronegativity:1,3

Did you know that ...

  • the Californium element was named after the site of its discovery (Lawrence Berkeley National Laboratory in California)?
  • Californium is formed in the fission of other radioactive elements in nuclear reactors?
  • the shortest lived isotope of Californium (244Cf) has a half-life of only 19 min?