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人工放射性元素,元素符号Ds,原子序数110,半衰期最长的同位素的质量数281。属周期系Ⅷ族。以德国重离子研究中心所在城市达姆施塔特(Darmstadt)命名。曾被称为110号元素(ununnilium),符号Uun。
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