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金属元素是化学元素的重要组成部分。学员在学习中对金属活泼性与电极电势和电离能的关系、金属不同价态的稳定性及其相互转化的条件等,常有一些模糊的认识,本文拟就这两个问题进行一些讨论。一、金属活泼性与电极电势和电离能的关系金属的电离能和电极电势是两个不同的概念,虽然二者都能用来衡量金属活泼性(失电子能力)的大小,但是应用的条件是不同的。在气态时,金属活泼性可用电离能的大小来衡
Metal elements are an important part of chemical elements. In the course of learning, students often have some vague understandings about the relationship between metal activity and electrode potential and ionization energy, the stability of the different valence states of metals, and the conditions for their mutual transformation. This article intends to discuss some of these two issues. First, the metal activity and the electrode potential and ionization energy The metal ionization energy and electrode potential are two different concepts, although both can be used to measure the size of the metal (electronic loss), but the conditions of application It is different. In the gaseous state, metal activity can be weighed against the size of ionization energy