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有人为了便于说明化学键形成的本质,把电子对称为“忠诚的伴侶”。我们觉得这样的提法有很大的缺点,实际情况并非如此。大家知道,当在一个轨道中已经填充了一个电子后,如果第二个电子也要进入这个轨道与第一个电子配对,它们之间并不是相互吸引而是相互排斥,因此当第二个电子进入轨道时就必须克服它们之间的相互排斥作用,所需要的能量叫做成对能。成对能是正值,这说明体系的能量不仅未因电子配对而降低,却反而会升高。
Someone called the “loyal companion” to facilitate the explanation of the nature of chemical bonds. We think there are major shortcomings in this formulation, which is not the case. We all know that when an orbit has been filled with an electron, if the second electron also enter the orbit with the first electronic pairing, they are not mutually attractive but mutually exclusive, so when the second electron When entering orbit must overcome their mutual exclusion, the energy required is called paired energy. Pairs can be positive, indicating that the energy of the system not only because of electronic matching and reduce, but will rise.