NIST Atomic Weights and Isotopic Compositions with Relative Atomic Masses
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The atomic weights are available for elements 1 through 118 and isotopic compositions or abundances are given when appropriate. Version 3.0.
1至118号元素的原子量均已提供，且在适宜情况下会给出同位素组成或同位素丰度。本数据集版本为3.0。
