chemical bond 托福

1.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价态共价半径;提出了计算过渡元素新价态电性和化学键离性方法。

2.The essential feature of monomer molecules is the ability to form chemical Bonds (see Bonding) with at least two other monomer molecules (polyfunctionality).

单基本特性是至少能与两个其它单形成化学键能力(多功能性)。