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周期律是化学上最重要定律之一。牠是我们发掘自然真理及克服自然的最重要的工具。周期表不仅帮助过化学家去发现新元素,如Sc,Ga,Ge等,并求得许多元素的正确原子量。牠并且使元素有了一个合理的分类,充当着近代原子理论的坚强事实基础。但周期表的最大应用,还在于不论现在及将来,永久是无机化学及工业化学研究上的指导。无数的工业化学问题都藉着牠的指示而得到解决,例如因发明Pb(C_2H_5)_4及CCl_2F_2而获得
Periodic law is one of the most important chemical laws. It is the most important tool for us to discover natural truths and to overcome nature. The periodic table not only helps chemists discover new elements such as Sc, Ga, Ge, etc., and derive the correct atomic weight for many elements. It also makes the elements have a reasonable classification, acting as a strong factual basis for modern atomic theory. However, the greatest application of the periodic table lies in the permanent and ongoing guidance of inorganic chemistry and industrial chemistry, both now and in the future. Numerous industrial chemical problems are solved by its instructions, such as the invention of Pb (C 2 H 5) 4 and CCl 2 F 2