电负性与电亲和性概念的分析

Difference between Electronegativity and Electron Affinity

本文对比了电负性与电子亲和性概念,国内许多文献常认为电负性是气体分子对外部自由电子的吸附,但化学物理文献及诸多百科全书均认为电负性是分子内原子对内部成键电子的吸引。建议今后使用气体电负性概念时慎重区别其义,避免与电子亲和性混淆。

In this paper, the concept of electronegativity in the electrical field and chemical physics are compared, but they are obviously inconsistent. A lot of literatures in electrical field often point that electronegativity is a parameter to describe the gas molecules to attract the external free electrons. However, the electronegativity is defined as the tendency of an atom in a molecule to attract bonding electrons in chemical physics literatures. It is suggested that the concept of electronegativity is subject to its definition in chemical physics when it is used.