00:01
In this question, you're given five different statements about pi bonds, and you're asked to determine which is correct.
00:07
So i'm going to go through each statement and explain if it's correct or incorrect.
00:12
So our first one says a pi bond is the same strength as a sigma bond.
00:17
So that's not true.
00:19
If you have a sigma bond, so just a single bond here, and you compare that to, let's say, an al -key, this bond is going to be of longer.
00:40
And weaker.
00:47
Whereas if we look at this, this bond is going to be shorter and stronger.
00:57
So they're not the same strength.
01:01
The next one says a pi bond can hold four electrons, two above and two below the sigma bond axis.
01:08
So this is also incorrect.
01:10
If you look at a double bond, say like this, so one of these bonds is a sigma bond and the other is a pi bond.
01:24
Each holds two electrons.
01:27
So your pi bond, it's not that you have a double bond, so you have a pi bond with four electrons.
01:33
It's that you have one sigma bond and one pi bond.
01:40
Next question says a carbon -carbon -carbon triple bond has one sigma bond and two pi bonds.
01:46
So that's correct...