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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- 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,其半衰期为三分钟,原子序数102。