From Wikipedia, the free encyclopedia
砹(Astatine)是一种具有极高放射性个化学元素,符号为At,原子序为85。地球上所有个砹侪是更重个元素衰变过程中产生个。渠个同位素寿命侪咾短,其中最稳定个是砹-210,半衰期为8.5小时。
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