Berkelium: the essentials
Berkelium is a radioactive rare earth metal, named after the University of California at Berkeley (USA). Apparently, berkelium tends to accumulate in the skeletal system. It is of no commercial importance and only a few of its compounds are known.
Berkelium: historical information
Berkelium was discovered in December 1949 at Berkeley, Californi, USA, by Ghiorso and others by cyclotron bombardment of milligram amounts of americium with helium ions. Perhaps the first visible amounts of a pure berkelium compound, berkelium chloride, was produced in 1962. It weighed just 3 billionth of a gram.
Berkelium around us Read more »
Berkelium has no biological role.
Berkelium is a synthetic element that is not present in the geosphere.
|Location||ppb by weight||ppb by atoms||Links|
|Universe||(no data)||(no data)|
|Crustal rocks||(no data)||(no data)|
|Human||(no data) ppb by weight||(no data) atoms relative to C = 1000000|
Physical properties Read more »
- Density of solid: 14780 kg m-3
- Molar volume: 16.84 cm3
- Thermal conductivity: 10 (estimate) W m‑1 K‑1
Heat properties Read more »
- Melting point: 1259 [986 °C (1807 °F)] K
- Boiling point: (no data) K
- Enthalpy of fusion: (no data) kJ mol-1
Crystal structure Read more »
The solid state structure of berkelium is: hcp (hexagonal close-packed).
Berkelium: orbital properties Read more »
Berkelium atoms have 97 electrons and the shell structure is 184.108.40.206.27.8.2. The ground state electronic configuration of neutral Berkelium is [Rn].5f9.7s2 and the term symbol of Berkelium is 6H15/2.
- Pauling electronegativity: 1.3 (Pauling units)
- First ionisation energy: 601 kJ mol‑1
- Second ionisation energy: (no data) kJ mol‑1
Isolation: coming soon!
Berkelium isotopes Read more »