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一、高考回顾回顾近十年的全国化学高考试题,元素的“位、构、性”问题是每年必考的热点,其考查的主要内容有:1、位——性关系。①同周期或主族元素及其化合物的性质递变规律;②已知元素在周期表中的位置推断其性质。2、构——位关系。根据元素原子结构确定其在周期表的位置。3、构——性关系。根据元素原子结构特征去推断元素及其化合物的性质及化合物的化学式。4、位——位关系。根据某原子在周期表中的位置推断其上下(同主族)、左右(同周期)元素的原子序数。5、构——位——性关系即上述关系的综合关系。题型方面主要有选择题、填空题和推断题。
First, the college entrance examination recalled review of the national chemical high exam questions in the past decade, elements of the “position, structure, and sex” issue is a must every year, the main content of the examination are: 1, - sexual relations. 1 The law of the nature of the same cycle or main group elements and their compounds; 2 The position of known elements in the periodic table to infer their properties. 2, structure - bit relationship. Determine its position in the periodic table based on its atomic structure. 3, structure - sexual relations. According to the atomic structural characteristics of the elements, the properties of the elements and their compounds and the chemical formulas of the compounds are deduced. 4, bit - bit relationship. According to the position of an atom in the periodic table, the atomic number of the upper and lower (main group), left and right (same cycle) elements are inferred. 5. The structure-position-sex relationship is the comprehensive relationship of the above relationships. The types of questions are mainly multiple-choice questions, fill-in questions and inference questions.