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Berkelium was the fifth transuranium element discovered after neptunium, plutonium, curium and americium. The major isotope of berkelium, 249 Bk, is synthesized in minute quantities in dedicated high-flux nuclear reactors , mainly at the Oak Ridge National Laboratory in Tennessee , United States, and at the Research Institute of Atomic Reactors ...
Element Berkelium (Bk), Group 20, Atomic Number 97, f-block, Mass [247]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Berkelium, synthetic chemical element of the actinoid series of the periodic table, atomic number 97. All berkelium isotopes are radioactive, and the only use of berkelium has been in the synthesis of heavier elements such as tennessine. The element berkelium was discovered in 1949.
- Berkelium Discovery
- Berkelium Properties
- Berkelium Name Origin
- Appearance
- Melting Point
- Isotopes
- Berkelium Compounds
- Berkelium Uses
- Berkelium Toxicity
- Berkelium Fast Facts
Glenn T. Seaborg, Stanley G. Thompson, Kenneth Street, Jr., and Albert Ghiorso produced berkelium in December 1949 at the University of California, Berkeley (United States). The scientists bombarded americium-241 with alpha particles in a cyclotron to yield berkelium-243 and two free neutrons.
Such a small quantity of this element has been produced that very little is known about its properties. Most of the available information is based on predicted properties, based on the element's location on the periodic table. It is a paramagnetic metal and has one of the lowest bulk modulus values of the actinides. Bk3+ions are fluorescent at 652 ...
Berkelium is pronounced as BURK-lee-em. The element is named after Berkeley, California, where it was discovered. The element californiumis also named for this lab.
Berkelium has a traditional shiny, metallic appearance. It is a soft, radioactive solid at room temperature.
The melting point of berkelium metal is 986 °C. This value is below that of neighbor element curium (1340 °C), but higher than that of californium (900 °C).
All of the isotopes of berkelium are radioactive. Berkelium-243 was the first isotope to be produced. The most stable isotope is berkelium-247, which has a half-life of 1380 years, eventually decaying into americium-243 via alpha decay. About 20 isotopes of berkelium are known.
Berkelium chloride (BkCl3) was the first Bk compound produced in sufficient quantity to be visible. The compound was synthesized in 1962 and weighed approximately 3 billionths of a gram. Other compounds which have been produced and studied using x-ray diffraction include berkelium oxychloride, berkelium fluoride (BkF3), berkelium dioxide (BkO2), an...
Since so little berkelium has ever been produced, there are no known uses of the element at this time aside from scientific research. Most of this research goes toward the synthesis of heavier elements. A 22-milligram sample of berkelium was synthesized at Oak Ridge National Laboratory and was used to make element 117 for the first time, by bombard...
The toxicity of berkelium has not been well-studied, but it's safe to assume it presents a health hazard if ingested or inhaled, due to its radioactivity. Berkelium-249 emits low-energy electrons and is reasonably safe to handle. It decays in alpha-emitting californium-249, which remains relatively safe for handling, but does result in free-radical...
Element Name: BerkeliumElement Symbol: BkAtomic Number: 97Appearance: Silvery metalBerkelium is a radioactive element. It dissolves in numerous aqueous inorganic acids like all other actinides. In aqueous solutions +3 is the most stable oxidation state while it readily adopts oxidation state of +4 in solids [3]. Its chemical properties resemble to its neighbouring element in lanthanide series named terbium.
Physical and chemical properties. Berkelium exists in such small amounts that very little is known about its properties. Occurrence in nature. Berkelium does not occur in nature. It is made artificially. Isotopes. All isotopes of berkelium are radioactive. The most stable is berkelium-247. It has a half life of 1,380 years.
It is a radioactive chemical element with the atomic number 97. They are traced in different parts of the planet where nuclear tests were conducted. It is a member of the actinide and transuranium element series in the periodic table. It was the fifth transuranium discovered.
