Berkelium is a radioactive element in the actinide series. Its symbol is Bk, and its atomic number is 97. It does not occur in nature. Its longest lived isotope, 247Bk, has a half life of 1380 years, and is the only isotope with a half life longer than a year.
Beryllium is light, hard and strong. It can be used to make amazingly resilient springs BUT ...
Beryllium dust is extremely POISONOUS. Because of this, it has never been used in mass production.
The first nuclear reactions used to obtain berkelium-249 were:
Pu-239(4n, gamma)Pu-243--------beta-------Am-243(n, gamma)Am-244-----beta-----Cm-244(5n, gamma)
Cm-249--------beta----------Bk-249
- Berkelium is an artificial element
- Berkelium is radioactive and unstable
- Berkelium is a solid metal
- Berkelium is a reactive chemical element
- Berkelium has 20 isotopes and 6 isomers
- melting point: 986 0c
- at room temperature is paramagnetic
- boiling point: 2 627 0C
- density for alpha phase: 14,78 g/cm3:
- electron configuration: [Rn]5f6.7s2
- Pauling electronegativity: 1,3
- atomic empirical radius. 170 pm
- first ionization energy: 601 kJ/mol
- thermal conductivity: 10 W/m.K
- heat of fusion; 7,92 kJ/mol
- crystalline structure: double hexagonal close packed
- bulk moduli: 20 GPa
Berkelium was discovered by Glenn T. Seaborg, Albert Ghiorso, Stanley G. Thompson and Kenneth Street in December 1949 at Berkeley Laboratories.
See the link below (Wikipedia) for general informations.
Berkelium is berkelium - a chemical element, doesn't contain any other elements.
Berkelium is used now only in research laboratories.
Now, berkelium has no use.
Berkelium has a silvery appearance.
Berkelium is not explosive; but a sufficient quantity of berkelium (practically impossible to be obtained) can reach the critical mass.
Berkelium is a radioactive element with the atomic number 96. No practical uses for berkelium have been found and the small amounts that have been created have been used exclusively for scientific research.
Seaborg actually produced more than two. He produced Plutonium (Pu), Americium (Am), Curium (Cm), Berkelium (Bk) and Califormium) (Cf).
heck yeah it is so radioactive I almost pooped my pants
Uranium and berkelium are radioactive elements.
Berkelium is a unique chemical element.
Berkelium was a step on the way to discover new artificial elements.
Berkelium and nobelium are members of the actinides group, solid metals, radioactive elements, unstable elements, artificial elements, very difficult to prepare extremely small quantities, only some compounds are known, etc.
1. Berkelium can be melted; also berkelium has a melting point. 2. Berkelium can react with the majority of other chemical elements.
Berkelium is in the period 7 of the Mendeleev table of chemical elements and in the group of actinides.
I'd look at some of the radioactive heavy elements. For example Berkelium, Californium, and Americium.
Bohrium, Berkelium, Boron, Beryllium, Barium, Bismuth, and Bromine
Berkelium has only scientific applications - it is a raw material for the preparation of heavier artificial elements.
Berkelium has only scientific applications - it is a raw material for the preparation of heavier artificial elements.
Berkelium is a member of the actinides group; probably similar to curium, americium, californium.
Berkelium has only scientific applications - it is a raw material for the preparation of heavier artificial elements.