She has led the Tennessee Lady Vols to first place in eight N.C.A.A.national championships.
VOA: special.2009.03.20
Negative 1 plus 0 should add up to negative 1, if in fact, we're correct for the c n anion.
负一加上零应该等于负一,如果是这样,我们对于氰离子的结果就是正确的。
So, if we think about the second case here where we have c n minus, now we're talking about a molecule with a net charge of negative 1.
那么,如果我们考虑的是第二个例子,也就是氰离子,那么现在我们讨论的是一个净电荷量为负一的分子。
Another photograph like this is called "Mexican Dwarf in His Hotel Room in N.Y.C."
VOA: special.2009.08.09
This backlash N, it's also a recurring theme and not just in C but in PHP, JavaScript, other languages as well.
还有反斜杠n,不仅C语言里有,在其他语言像PHP,JavaScript等都会碰到。
VOA: special.2010.04.12
So, let's try another example here, and let's try a case now where instead of dealing with a neutral molecule we have an ion, so we have c n minus.
那么,让我们来试一下另外一个例子,这次不是一个中性原子,而是一个离子,氰离子。
VOA: special.2009.06.07
And if you put this in the well-ventilated area, if you prepare this outside, the h c n gas will actually be released into the air, so you're safe, you can eat it later.
而如果你把它们放在通风良好的地方,在室外处理,那么氰化氢气体,将会被释放到空气中,这样你就安全了,过后就可以吃了。
The other thing is that we can re-write our h c n in terms of bonds.
还有一件事是我们可以用键的形式来表示氰化氢。
So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.
这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话,这样我们就有氢与碳之间的单键和碳与氮之间三键,然后还有一对孤对电子在氮这里。
So, for example, let's look at thiocyanate ion, we have c s and n.
比如,让我们来看一下硫氰酸根离子,我们有碳,硫和氮。
So we have h c n.
那么我们有氢,碳和氮。
So if you're trying to make a more complicated organic molecule carbon-carbon bonds are one of the most difficult things to make in organic chemistry, and it turns out that c n minus is a very reactive molecule, so it's a good way, even though we'll go over some drawbacks in a second, it is a good way to make carbon-carbon bonds.
如果你要合成一个更复杂的有机分子,碳碳键是有机化学中,最难制造的键之一,而实际上氰离子是一种具有很高活性的分子,用它是一个好办法,尽管我们一会儿将看到它的一些缺点,但它的确是一个制造碳碳键的好方法。
I print F, I backslash N, just to pretty up the screen, ArgC I then iterate from, I equal zero up to Arg C; so Arg C is the convention.
我键入printf,反斜杠n,来使屏幕变得美观点,然后i开始迭代,从i等于0增加到;,所以ArgC是一个约定。
So we have 4 plus 5, but we're actually not done yet, because it's c n minus, so if we have minus, we actually have an extra electron in our molecule.
我们有四个加上五个,但是我们实际上还没做完,因为这是个负离子,所以如果我们有这个负号,那么我们的分子实际上还有一个额外的电子。
So, why don't you go ahead and tell me, keeping that in mind, which atom in terms of h c or n would you expect to be in the center of hydrogen cyanide?
那么,请大家来告诉我,并且记住它,你认为氢,碳和氮中哪个原子,应该在氰化氢的中间呢?
So, the first thing we do is put two electrons between h and c, and then two electrons between c and n.
那么,我们先在氢和碳之间放两个电子,然后在碳和氮之间再放两个电子。
So, in terms of finishing our Lewis structure, we're actually not done yet here, even though we have full octets, and we've used up all of our valence electrons, and the reason is because it's c n minus, so we need to make sure that that's reflected in our Lewis structure, so let's put it in brackets here, and put a minus 1.
那么,根据我们的路易斯结构的完成情况,我们实际上还没有全部完成,尽管我们有了填满的“八隅体“,而且用完了所有的价电子,原因就是因为这是一个负离子,我们需要确保我们的路易斯结构能反映出这一点,所以让我们给它加个括号,再加个负一。
C-A-N-S-U An S in the side so Cansu, that was spelled C-A-N-S-U.
有一个S喔。
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