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刘葆初同志在《湖南教育》一九七八年第三期《离子反应教学三步》一文中提出,非金属活动顺序为:F Cl Br O I S(活泼性减弱)。对此,有人质疑:Cl,Br,O,I,S 的电负性分别是3.0,2.8,3.5,2.4,2.5,为什么与上述活泼性顺序相距甚远?如果说上述活泼性顺序是正确的,其根据何在?就此,谈谈个人的一点看法。电负性是用以表达原子在分子中吸引电子的能力的,是一个相对数值。它有多种计算法。其中密立根计算法是假定一个分子中有两个原子 A、B,若 B 从 A 夺取一个电子
In the article “Three Steps of Ion Reaction Teaching” in the third issue of “Hunan Education” in 1978, Comrade Liu Yuchu proposed that the order of non-metallic activities is: F Cl Br O I S (weakening of liveliness). In this regard, some people have questioned: The electronegativity of Cl, Br, O, I, S are 3.0, 2.8, 3.5, 2.4, and 2.5, respectively. Why is the order of the above liveliness far? If the above order of liveliness is correct Based on this, talk about one’s own point of view. Electronegativity is used to express the ability of an atom to attract electrons in a molecule and is a relative value. It has a variety of calculations. The Millikan calculation is based on the assumption that there are two atoms A and B in a molecule. If B seizes an electron from A,