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元素周期律和元素周期表是学习化学的重要工具,对整个中学化学的教学有着重大的指导作用,且知识内容丰富,规律性强,因此命题空间极为广阔,是高考必考内容之一,也是广大学生需重点突破的知识点．一、考纲解读 1．能力要求 (1)掌握元素周期律的实质,了解元素周期表(长式)的结构(周期、族) (2)以第三周期为例,掌握同一周期内元素性质(原子半径、化合价、单质及化合物性质)的递变性质与原子结构的性质．
The periodic law of the elements and the periodic table of the elements are important tools for learning chemistry. They play an important guiding role in the teaching of chemistry in the whole middle school, and are rich in knowledge and strong in laws. Therefore, the space for propositions is extremely broad, The majority of students need to focus on the breakthrough point of knowledge. First, the exam outline Ability Requirements (1) Grasp the substance of the periodic law of the elements and understand the structure of the periodic table (periodic) (2) Take the third cycle as an example, and grasp the elements of the same cycle (atomic radius, valence, And compound properties) and the nature of atomic structure.