The relationship between bond valence and bond covalency has been investigated by a semiempirical method.

用一种半经验方法固体材料中键荷与键共性的关系。

A method to calculate new valence electronegativity and the ionicity of chemical bond of the transition metal elements is also presented here.

提出计算过渡元素态共半径的公式;提出计算过渡元素新态负性和学键的子性的方法。