电负性是化学领域中的一个极为重要的概念,近年来有了很大的发展,但也还存在一些原则问题.首先是电负性的表示,即它的定义的表示式.以往流行的几种定义电负性的表示式,都未能较好地表现原子在分子中吸引电子的能力.严格地说,原子在分子中吸引电子的能力,不仅与其本身的轨道及杂化特性有关,同时还与和它键合的原子性质有关,以往的电负性理论都未表现这一 Electronegativity is a very important concept in the field of chemistry. In recent years, there has been a great development, but there are still some principle problems. The first is the expression of electronegativity, that is, the definition of it. Several definitions of electronegativity are not able to better represent the atom’s ability to attract electrons in the molecule.Strictly speaking, the ability of atoms to attract electrons in the molecule, not only with its own orbit and hybrid characteristics, At the same time also with the atomic nature of its bonding, the previous theory of electronegativity did not show this