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放射性元素
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人工放射性元素,元素符号No,原子序数102,半衰期最长的同位素的质量数259。属周期系ⅢB族,锕系元素。为纪念著名的瑞典科学家A.B.诺贝尔[注]而命名。
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{化}
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>放射化学与辐射化学>放射性元素化学>释义
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