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元素在周期表中所处周期和族,主要决定于它们原子结构的不同。根据化学教学大纲,教师必须明确要求学生牢记36号以前各元素以及各主族元素和零族元素的名称和符号,这样对今后学习化学基本理论将带来很多方便。 如果有时在手头没有元素周期表的情况下,要求对原子序数大于36号以上的各元素,是否能较快地判明它在周期表中的位置及主族
The periodicity and family of elements in the periodic table are mainly determined by their atomic structure. According to the chemistry syllabus, teachers must clearly require students to keep in mind the names and symbols of each element and the elements of the main groups and the elements of the nuclei before the 36th, so that it will bring many conveniences to the basic theory of learning chemistry in the future. If there is no periodic table of the hand at hand, it is required that if each element with an atomic number greater than 36 is more quickly identified, its position in the periodic table and the main group can be determined.