97 Bk Berkelium
Actinoid, mass: 247 u, no stable and no natural isotopes.13 milligrams of berkelium 249, this here was used for the first creation of tenessine. Photo: Oak Ridge National Laboratory, public domain. Berkelium is made from americium or curium, mostly unintentional, because outside of basic research it hasn't any application. The most stable isotope, 247Bk, has a half-life of 1380 years after all, but this is hardly produced. The most commonly accrued 249Bk has a half-life of only 330 days. Of this, each year about 1 gram emerges worldwide as by-product in nuclear reactors, most of it decays to californium. Berkelium is a strong β-emitter.
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Page last changed on December 07. 2016
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