valence

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

用一种半经验方法研究了固体材料中键电荷与键共系。

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

提出了计算过渡元素态共半径公式;提出了计算过渡元素新态电负和化学键离方法。