在元素周期表中添加C族的设想

The Idea to Add a Family C in the Periodic Table of Elements

指出在周期表中重新确定镧系元素的位置后所面临的矛盾,提出有必要在周期表中添加一个C族的设想;提出了建立C族的方法;总结了镧系元素结构的特点;解释了元素镧为何属于镧系的问题;对Ⅷ族与ⅧC族元素性质进行了比较;指出建立C族的意义.

In periodic table of elements, when the location of Lanthanide is redefined, some problems come into being. It is necessary to add a family C in the periodic table of elements. The reasons of this new family added are given. The method of establishing family C is proposed. The feature and properties of the structure of Lanthanide is summed up. The reason that Lanthanum belongs to lanthanide is explained. The natures of elements of group Ⅷ and group ⅧC are compared. The significance of establishing family C is discussed.