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荷与共性的关系。

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

提出了计算过渡元素态共半径的公式;提出了计算过渡元素新态负性和化学的离子性的方法。