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纵观历年高考化学试题,元素周期表的知识点都属于重要考点。在高考中该部分内容常以元素化合物知识为载体,考查元素周期表的结构,元素性质与原子结构的关系,元素、核素及同位素等概念的辨析。同学们在复习时,应注意以下问题。1.了解元素周期表的一些特点(1)主族元素不全是金属元素,过渡元素全部是金属元素。(2)含有元素种类最多的族是ⅢB族,形成化合物种类最多的元素在ⅣA族。
Throughout the chemical examinations over the calendar year, the periodic table of knowledge points are important test centers. In the college entrance examination in this part of the content of the knowledge of elemental compounds as a carrier, examining the structure of the periodic table, the nature of elements and the relationship between atomic structure, elements, isotopes and isotopes and other concepts of discrimination. Students in the review, should pay attention to the following questions. 1. Understand some of the characteristics of the periodic table (1) main elements are not all metal elements, the transition elements are all metal elements. (2) The group containing the most elemental species is Group IIIB, and the element forming the largest group of compounds is in Group IVA.