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(中文) 元素周期表系列:第2号元素——氦元素

ChemistryBy PhDSciNet TeamSaturday May 19th, 2018Leave a comment

(中文) 氦的命名来源于希腊神话中的太阳神赫利俄斯的名字,由于太阳光谱中的暗线是它存在的第一个线索,而当时人类已知的元素都无法解释这种暗线,因此而命名为氦……

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