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1.金属活动性的概念在初中化学学习阶段,首先引入的是金属活动性的概念,它是指金属单质在水溶液中失去电子生成金属阳离子而后转化为水合离子倾向的大小,也就是金属离子在水溶液里被还原的难易程度的衡量。2.金属活动性顺序1865年,贝开托夫在实验的基础上,根据金属和金属离子间相互置换能力的大小,以及金属跟酸、跟水等反应的剧烈程度,首先确定了金属活动性顺序。需要指出的是,在这个金属活动顺序里含有非金属元素氢。观察金属活动顺序表可以看出:凡是排在
1. The concept of metal mobility In the junior high school chemistry learning phase, the first introduction of the concept of metal mobility, which refers to the metal element in the aqueous solution of electrons to generate metal cations and then converted to hydrated ions tend to size, that is, metal ions in A measure of the ease of reduction in aqueous solutions. 2.Metal activity sequence In 1865, Beckettv based on the experiment, according to the mutual exchange capacity of metal and metal ions, as well as the intensity of metal reaction with acid, followed by water, first determine the metal activity order. It should be pointed out that in this sequence of metal activity contains non-metallic elemental hydrogen. Observing the sequence of metal activities can be seen: all ranked