历史名称,是核素235铀。天然放射性核素,锕铀天然放射系始核,丰度为0.714%,α衰变体,半衰期为7.1×108年,衰变过程可表示成:除发生α衰变外,还能自发裂变,半衰期为(1.8±1.0)×1017年。
锕铀铀的同位素,原子质量数为235,与慢。
The isotope of uranium with mass number235, fissionable with slow neutrons.
有三个天然存在的放射系列,即钍系、锕系和铀系。
There are three naturally occurring radioactive series - the thorium series, the actinium series, and the uranium series.
锘在锕类元素中的一种放射性超铀元素,人工微量制造,其最长寿命的同位素是锘255,其。
A radioactive transuranic element in the actinide series, artificially produced in trace amounts. Its longest-lived isotope is No255 with a half-life of3 minutes. Atomic number102.
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