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晶体知识在高考选修内容中是考查的重点,主要考查以下几个方面.一、晶体结构的认识1.离子晶体例1图1是从NaCl或CsCl晶体结构图中分割出来的部分结构图,试判断属于NaCl晶体结构图的是()图1(A)图1(1)和图1(3)(B)图1(2)和图1(3)(C)图1(1)和图1(4)(D)只有图1(1)解析:NaCl晶胞中,每个Na+周围有6个Cl-离子,每个Cl-周围有6个Na+,每个Na+周围最近且等距离的Na+有12个;每个Cl-周围的6个Na+形成正八面体结构.氯化铯晶体
Crystal knowledge in the college entrance examination elective content is the focus of the test, the main test the following aspects: First, the understanding of the crystal structure 1. Ionic crystal Example 1 Figure 1 from NaCl or CsCl crystal structure diagram of the part of the structure of the cut out, the test 1 (1) and 1 (3) (B) FIG. 1 (2) and FIG. 1 (3) (C) 1 (4) (D) Only Fig. 1 (1) Interpretation: There are six Cl- ions around each Na + and six Na + around each Cl +, the nearest and equidistant around each Na + There are 12 Na + and 6 Na + around each Cl- form a regular octahedron structure.