And since oxygen is highly electronegative, it's going to pull the electrons towards it.

由于氧气具有很强的电负性，它会将电子拉向自己。

In summary the electricity is coming, not from the lemon, but from a chemical reaction resulting from the differences in electro-negativity between zinc and copper.

总而言，电就因此产生了，并不从柠檬中产生的，而因化学反应而产生的，也就铜的电负性间的差异。

One of the electrodes has to have a stronger desire for electrons than the other, in chemistry we say that it has a higher electro negativity.

其中一个电极需要比另外一个电极更能吸引电子，在化学中我们会称为它有更高的电负性。

It's highly electronegative and when it finally gets to it, we've made our product.

它具有高度的电负性，当最终接触到它时，我们就制成了产品。

Inside the quartz is a crystal lattice of one silicon for every two oxygen atoms, which forms a network of covalent bonds, with electrons being more attracted to the oxygen due to their electronegativity.

石英内部由每个硅原子对应两个氧原子组成的晶格，形成了一个共价键网络，由于氧的电负性更强， 电子更倾向于被氧吸引。

And a really strong version of that is between hydrogen and really electronegative atoms, which are ones that like to take the electron density away, like oxygen.

其中一种特别强的形式氢与高电负性原子间的作用力，这些原子倾向于夺取电子密度，比如氧。

And this is typical when you're dealing with two elements that aren't very different in terms of their electronegativity or their desire to attract electrons.

而这在处理两种电负性或吸引电子的能力相差不大的元素时很典型的。

That, along with the difference in electronegativities of oxygen and hydrogen, leads to the polarity of water and the existence of life.

那， 连同氧氢的电负性差异，导致了水的极性生命的存在。

The same thing does for CH4 with its tetrahedron of weakly electronegative hydrogens around a more strongly electronegative carbon.

同样的情况也适用于CH4，其四个弱电负性的氢原子围绕着一个较强的电负性碳原子形成了一个四面体结构。

So it's important to understand something as simple as oxygen is more electronegative than carbon.

所以理解氧的电负性比碳强这一点很重要。

Well, oxygen atoms are more electronegative than hydrogen.

氧原子的电负性比氢原子强。

That actually leads to some extinctions on our planet because oxygen is very good at grabbing onto, it's highly electronegative, and so it turns a reducing kind of atmosphere into an oxidizing atmosphere.

那实际上会导致地球上的一些物种灭绝， 因为氧气非常善于夺取电子，它具有很强的电负性， 因此将一个还原性的大气转变为氧化性大气。

The electronegativities of various elements are all super well known, and waiting for you in tables on the internet.

各种元素的电负性早已广为人知，你可以在网上的表格中找到它们。

And so you can see that fluorine is going to have the highest electronegativity on the periodic table.

所以你可以看到氟在元素周期表上具有最高的电负性。

If two atoms in a bond have very different electronegativities, like say hydrogen at 2.1 and oxygen at 3.5, the electrons are more attracted to the atom with the higher electronegativity.

如果成键的两个原子电负性差异很大，例如氢为2.1，氧为3.5，则电子会更强烈地被电负性较高的原子吸引。

If that's the case, the outer electrons spend enough extra time around the element that's more electronegative that chemists label the molecule polar.

如果这样的话，外层电子会花更多的时间围绕着电负性更强的元素， 因此化学家会将这种分子标记为极性分子。

And it turns out, it's so much more electronegative that it's no longer going to share electrons with sodium.

结果发现，它的电负性强这么多，以至于不再会与钠共享电子。

When we're looking at nonpolar covalent bonds what we're going to find is that their electronegativities are different.

当我们观察非极性共价键时，我们会发现它们的电负性不同的。

Which so friction-less because of fluorine's extreme electronegativity.

由于氟的极端电负性， 因此摩擦较小。

Let's look at the differences in electronegativity between sodium and chlorine.

让我们看看钠氯间的电负性差异。