The song "Lithium" is a good example.

VOA: special.2009.11.06

And this is just a picture showing some of these sizes with their parent. So, for example, a lithium here, you can see how lithium plus is smaller than the actual lithium atom in its neutral state.

这是一张对比图,展示某些离子与它们的母体，比如，这里是锂，大家可以看到正一价锂离子是多么的小,与中性锂原子相比。

麻省理工公开课 - 化学原理课程节选

So, why don't you take a look at this and tell me which are possible for a 2 s electron in a lithium atom where z 3 is going to be equal to three?

你们为什么不看一下这个然后告诉我对,于一个锂原子中的2s电子哪些是可能,的？它的有效电荷量,可能等于？

麻省理工公开课 - 化学原理课程节选

And Bolivia,interestingly, is one of the world's largest sources of lithium, which if you think we're all going to drive electric cars, is going to be a vital source."

VOA: standard.2010.04.21

s1 Here is 1s atomic. But lithium has 2s1, so I need a 2s atomic orbital here and likewise over here.

这是1s原子，但锂有两层，所以我还需要在这里添加2s轨道,就像那样。

麻省理工公开课 - 固态化学导论课程节选

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

We would predict to see a single bond between lithium, and it turns out that's what we see.

我们可以预测在锂中会看到一个单键，而实际上确实是这样的。

麻省理工公开课 - 化学原理课程节选

This one is calculable by the Bohr model because lithium 2plus is a one electron system.

这个可以通过波尔模型计算而得到,因为锂2+是单电子系统。

麻省理工公开课 - 固态化学导论课程节选

Similarly we see as we go down the table, so as we're going from one row to the next row, so, for example, between helium and lithium, we see a drop; the same with neon to sodium, we see a drop here.

同样地，我们来看看沿着周期表往下走，当我们从一行到下一行时，比如，从氦到锂，我们看到了一个下落;,从氖到钠也一样，我们看到这里有个下落。

麻省理工公开课 - 化学原理课程节选

Lithium 2plus is a one electron atom.

锂二正离子是单电子原子。

麻省理工公开课 - 固态化学导论课程节选

Lithium, slenderizing, that's great to see in a soda.

锂能让人变苗条，汽水就能做到这点是很棒的。

麻省理工公开课 - 化学原理课程节选

This was eventually taken out, and actually just for your interest, there was no overlap between the time when cocaine was in Coca Cola and lithium was in 7-Up, so there was a few years difference between those two times, but it's amazing to think about what does go into processed foods.

锂最终被去掉了，如果你感兴趣的话，可口可乐中含有可卡因,与七喜中含锂的时代,并没有交集，它们之间还差了几年，但是想一想加工食品里,会加入什么东西还是很令人吃惊的。

麻省理工公开课 - 化学原理课程节选

There's a lot of good things about lithium.

有很多好东西是与锂有关的。

麻省理工公开课 - 化学原理课程节选

And then a lithium 2plus still has an electron.

然后二价锂离子仍有一个电子。

麻省理工公开课 - 固态化学导论课程节选

And, one other thing that I failed to point out, if you take a look at the energies associated with the outermost electrons, in this case, lithium, you see it's 0.5 megajoules per mole, and then what's the 6.26?

还有另外一点我忘记提到的是，如果你观察离最外层,的电子的能量，在这种情况，对于锂，你可以得到，它是每摩尔0。5兆焦，那么6。26是什么呢？

麻省理工公开课 - 固态化学导论课程节选