介绍高中化学《元素周期律》中“金属性、非金属性递变规律”时,一些教师常源引学生们在初中已学过的“金属活动性顺序表”作为实例佐证。笔者认为有欠妥当。通常所说的“金属性”和“金属活动性”都是指金属原子失电子能力的大小:失电子的能力越强,“金属性”越强,其“金属活? When introducing the “Metallic and Non-Metallic Gradual Changes Law” in High School Chemistry’s “The Periodicity of Elements”, some teachers often cited examples of metal activity sequences that students have learned in junior high school. The author thinks that it is improper. Commonly referred to as “metallurgy” and “metal activity” refer to the size of the metal atom’s ability to lose electrons: the stronger the ability to lose electrons, the stronger the “metallurgy” and its “metallic activity?”