So, which atom is in need of those lone pair electrons? 那么,哪个原子需要这对孤对(LP)电子呢?
That's what we call when we have three bonding atoms and one lone pair. 这是当我们有3个成键电子,和一个孤对(LP)时这样称它。
So how many lone pair electrons do we have? 那么我们有多少孤对(LP)电子呢?
So if we take a look at nitrogen here, what you 'll notice is we have thre available for bonding, - and we already have our lone pair & one of our orbitals is already filled up. 如果我们看一下氮原子,我们注意到我们可以成3个键,我们已经有一个孤对(LP)-,其中的一个轨道已经被填满了。
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(LP)电子在氮这里。