• But what I'm going to tell you already is this is a case where, in fact, it's an exception to the idea that the lowest energy structure has the lowest ionization energy in the middle, and we can figure this out when we look at formal charge.

    但是我已经告诉大家这个例子,实际上,是中心原子电离能最低的结构,的能量最低这一思路的一个例外,我们可以通过形式电荷看出这一点。

    麻省理工公开课 - 化学原理课程节选

  • So this is our lower energy structure.

    因此这是能量更低的结构。

    麻省理工公开课 - 化学原理课程节选

  • He preserved the broad concept of energy levels but put in some fine structure.

    他继承了波尔的广泛意义上的能级概念,但引进了一个新的结构。

    麻省理工公开课 - 固态化学导论课程节选

  • But we could, for example, look at a case where we have several different structures that look pretty good, and the one we want to determine as being the lowest energy structure is the one in which the absolute values of the formal charges are going to be lower, so essentially that they have less charge separation.

    但是我们可能,比如,遇到一种情况,有好几个候选的路易斯结构看起来都挺好的,这时候我们就需要,通过比较哪个形式电荷的绝对值更低,来决定哪个结构的能量更低,本质上这个结构中分开的电荷更少。

    麻省理工公开课 - 化学原理课程节选

  • In terms of picking a Lewis structure that's going to be the lowest energy, what you want to do is put the atom with the lowest ionization energy in the center of your atom.

    为了挑选一个具有,最低能量的路易斯结构,你需要把电离能最低的原子,放在最当中的位置。

    麻省理工公开课 - 化学原理课程节选

  • All right. So formal charge can actually help us out when we're trying to decide between several Lewis structures that look like they might be comparable in terms of which might be the lower energy or the more stable structure.

    好的,形式电荷真的可以,帮助我们决定,在几种路易斯结构中,哪个更可能符合能量更低,或者结构更稳定的要求。

    麻省理工公开课 - 化学原理课程节选

  • Often a good thing to start with is to put the lowest ionization energy atom in the middle, and if you don't have charge separation then go with that structure, but if you do find you have a lot of separation, such as the case in negative 2, positive 2, and minus 1, then you want to say wait a second, this is really bad in terms of formal charge, let me go ahead and see what other options I have here.

    通常一开始把电离能最低的原子,放在中心位置就很好了,如果你发现电荷没有分开,那么这个结构就没问题了,但是如果你发现有很多分开的电荷,比如这种情况,有负二,正二和负一,那么你会想要说等一下,从形式电荷来看这很不好,让我去看看其它可能的选择。

    麻省理工公开课 - 化学原理课程节选

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定