在教学中应注意元素周期系的某些“不规则性”

Paying Attention to Some Irregularities of Elements' Periodicity While Teaching

本文从四个方面较详细地讨论了元素周期系存在的“不规则性”或“反常”现象 ,并给出了某些理论解释 ,对中学教师教授元素周期律具有一定的指导意义。

This paper discusses in detail the irregularities or unusual phenomena existing in elements from four aspects, and gives some theoretical explanations, which will help middle school teachers with their teaching of elements' periodicity.