What Represents Helium - 搜索视频

SOLVED: Both helium (He) and beryllium (Be) have two valence electrons. Whereas He represents a noble gas element, Be does not. Assign reason.

SOLVED: Both helium (He) and beryllium (Be) have two valence electrons. Whereas He represents a noble gas element, Be does not. Assign reason.

VIDEO ANSWER: So here in this question, we are asked about that: helium is having 2 valenced electrons, that is 22, so its electronic configuration is 1 s, 22 …

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氦气球（Helium Balloons) 与氢气球（Hydrogen Balloons) 的区别。。。。脾气火爆的氢气 #botaktong #delonballoons #balloon #气球 #氦气 #氢气 #跟戴博士一起做实验 #化学实验 #知识科普 #氢气球爆炸 #知识前沿派对 | Terence Tong

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