Nuclides with atomic number of 97 but with different mass numbers
Isotopes of berkelium (97Bk)
Main isotopes[1]
Decay
abundance
half-life (t1/2)
mode
product
245Bk
synth
4.94 d
ε
245Cm
α
241Am
246Bk
synth
1.8 d
α
242Am
β+
246Cm
247Bk
synth
1380 y
α
243Am
248Bk
synth
>300 y[2]
α
244Am
249Bk
synth
330 d
β−
249Cf
α
245Am
SF
–
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Berkelium (97Bk) is an artificial element, and thus a standard atomic weight cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized was 243Bk in 1949. There are 20 known radioisotopes, from 230Bk and 233Bk to 253Bk (with the exception of 235Bk and 237Bk), and 6 nuclear isomers. The longest-lived isotope is 247Bk with a half-life of 1,380 years.
^Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
^Milsted, J.; Friedman, A. M.; Stevens, C. M. (1965). "The alpha half-life of berkelium-247; a new long-lived isomer of berkelium-248". Nuclear Physics. 71 (2): 299. doi:10.1016/0029-5582(65)90719-4.
and 28 Related for: Isotopes of berkelium information
Berkelium (97Bk) is an artificial element, and thus a standard atomic weight cannot be given. Like all artificial elements, it has no stable isotopes...
this isotope. The second important berkeliumisotope, berkelium-247, is an alpha-emitter, as are most actinide isotopes. All berkeliumisotopes have a...
americium also revealed isotopesofberkelium, californium and curium, in particular 245Cm, 246Cm and smaller quantities of 247Cm, 248Cm and 249Cm. Atmospheric...
number of 96. Because it is an artificial element, a standard atomic weight cannot be given, and it has no stable isotopes. The first isotope synthesized...
half-lives exceeding the age of the universe for the heaviest isotopes like 335Ts when beta decay is not considered. Lighter isotopesof tennessine may be produced...
stable isotopes, and thus a standard atomic weight cannot be given. The longest lived, and most common, isotopeof radium is 226Ra with a half-life of 1600 years...
nuclear chain reaction. As such, while all fissile isotopes are fissionable, not all fissionable isotopes are fissile. In the arms control context, particularly...
occurring isotopes but none are stable. One isotope, 232Th, is relatively stable, with a half-life of 1.405×1010 years, considerably longer than the age of the...
with the isotopesof californium. Prolonged neutron irradiation also produces a long-lived isotope 254Es (t1/2 = 275.5 days). Twenty isotopesof fermium...
has no stable isotopes. The four naturally occurring isotopes allow a standard atomic weight to be given. Twenty-nine radioisotopes of protactinium have...
given. Like all artificial elements, it has no known stable isotopes. The first isotope to be synthesized was 241Am in 1944. The artificial element decays...
before 244Pu are isotopesof uranium and neptunium (not considering fission products), and the primary decay products after are isotopesof americium. mPu –...
stable isotopes and no characteristic terrestrial isotopic composition, thus a standard atomic weight cannot be given. There are 34 known isotopes, from...
given. Like all trace or artificial elements, it has no stable isotopes. The first isotope to be synthesized and identified was 239Np in 1940, produced...
Other isotopes such as uranium-233 have been produced in breeder reactors. In addition to isotopes found in nature or nuclear reactors, many isotopes with...
is a chemical element; it has symbol Pm and atomic number 61. All of its isotopes are radioactive; it is extremely rare, with only about 500–600 grams...
cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized was 245Cf in 1950. There are 20 known radioisotopes...
all its isotopes have half-lives of 8.1 hours or less, decaying into other astatine isotopes, bismuth, polonium, or radon. Most of its isotopes are very...
gadolinium was named after Johan Gadolin. 97. berkelium, Bk, named after Berkeley, where the University of California, Berkeley is located (1949). 98. californium...
11 have 5 stable isotopes, 9 have 4 stable isotopes, 5 have 3 stable isotopes, 16 have 2 stable isotopes, and 26 have 1 stable isotope. Additionally, about...
other isotopes have half-life shorter than a year, and most of these have half-lives less than 20 minutes. 249Cf is formed by beta decay ofberkelium-249...
often after a series of decays, a stable isotope is reached: there are 251 stable isotopes in the universe. In stable isotopes, light elements typically...
occurring isotopes. Several radioactive isotopes have been synthesized in the laboratory, either by fusing two atoms or by observing the decay of heavier...
of microseconds. From April to September 2012, an attempt to synthesize the isotopes 295Uue and 296Uue was made by bombarding a target ofberkelium-249...
radioactive berkelium target necessary to complete the JINR's calcium-48 campaign to synthesise the heaviest elements on the periodic table. Two isotopesof element...
found in nature. All known isotopesof bohrium are highly radioactive; the most stable known isotope is 270Bh with a half-life of approximately 2.4 minutes...
and berkelium. Einsteinium(II) compounds can be obtained, for example, by reducing einsteinium(III) with samarium(II) chloride. Eighteen isotopes and...
synthesized by neutron-capture. Because of this impediment in forming heavier isotopes, these short-lived isotopes 258–260Fm constitute the "fermium gap...
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