Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97.
| FactSnippet No. 1,434,142 |
12 Facts About Berkelium
2.
Berkelium was the fifth transuranium element discovered after neptunium, plutonium, curium and americium.
| FactSnippet No. 1,434,143 |
3.
Berkelium is relatively soft and has one of the lowest bulk moduli among the actinides, at about 20 GPa .
| FactSnippet No. 1,434,144 |
4.
Berkelium is one of the elements that have been detected in Przybylski's Star.
| FactSnippet No. 1,434,145 |
5.
Berkelium is produced by bombarding lighter actinides uranium or plutonium with neutrons in a nuclear reactor.
| FactSnippet No. 1,434,146 |
6.
Berkelium-247 was produced during the same year by irradiating Cm with alpha-particles:.
| FactSnippet No. 1,434,147 |
7.
Berkelium-242 was synthesized in 1979 by bombarding U with B, U with B, Th with N or Th with N It converts by electron capture to Cm with a half-life of 7.
| FactSnippet No. 1,434,148 |
8.
Berkelium is then extracted with ion exchange, extraction chromatography or liquid-liquid extraction using HDEHP, amines, tributyl phosphate or various other reagents.
| FactSnippet No. 1,434,149 |
9.
Berkelium fluoride is a yellow-green ionic solid and is isotypic with uranium tetrafluoride or zirconium tetrafluoride.
| FactSnippet No. 1,434,150 |
10.
Berkelium fluoride is a yellow-green solid, but it has two crystalline structures.
| FactSnippet No. 1,434,151 |
11.
Berkelium phosphate has been prepared as a solid, which shows strong fluorescence under excitation with a green light.
| FactSnippet No. 1,434,152 |
12.
Berkelium-249 is a common target nuclide to prepare still heavier transuranium elements and superheavy elements, such as lawrencium, rutherfordium and bohrium.
| FactSnippet No. 1,434,153 |