元素周期表的ⅦA族元素主要包括包括氟(F)、氯(Cl)、溴(Br)、碘(I)、砹(At),简称卤素。卤族元素的单质都是双原子分子,其中氯元素的相关知识点是高考考查的重点和热点。由于大家的学习基础和学习能力的薄弱,在学习这部分知识时往往感觉困难。如果同学们能够建立整体而多 The Group VIIA elements of the Periodic Table include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and thorium (At), and are abbreviated as halogen. The simple elements of halogen elements are all diatomic molecules, and the related knowledge points of chlorine element are the focus and hot spot of the college entrance examination. Because everyone’s learning foundation and learning ability are weak, it often feels difficult to learn this part of the knowledge. If students can build a whole and more