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元素周期表简称周期表,它是元素周期律的图解形式.元素周期表是学习和研究化学的一种重要工具.利用它不仅可以系统归纳已知
The periodic table of the periodic table, which is a graphical representation of the periodic law of the elements, is an important tool for studying and studying chemistry, and can be used not only to systematically summarize known