00:03
Hi there, in this question we want to identify which of the given bonds has the highest ionic character, or in other words is the most polar.
00:16
Well, the best way to determine this would be to look at in which of these bonds there is the greatest difference in electronegativity between the two atoms.
00:29
If you recall, electromagnativity is a measure of how strongly an atom pulls the electrons in a bond toward it.
00:53
So how strongly it pulls those shared electrons toward it.
00:58
The more imbalance we get, the more polar the bond.
01:03
In other words, when we see the greatest difference in electro negativity between the two elements, that means there's going to be the greatest imbalance of electrons, because the stronger element is going to be pulling those electrons toward it, producing a polar bond.
01:19
So let's look at each of these bonds and their electronegativities and determine the difference.
01:24
The greatest difference in electronegativity is going to be our answer.
01:28
In the first one, we have si, which has an electronegativity of 1 .8, and cl, which is 3 .0.
01:37
To find these electronegativities, you need to use a table of electronegativities and just kick them off of there.
01:44
You are not expected to memorize the electronegativities.
01:48
All right, so the difference here between 1 .8, 3 .0, we just want the absolute difference.
01:54
So a positive number.
01:55
It's going to be 1 .2.
01:57
That's a pretty significant difference.
02:00
That's a pretty polar bond.
02:01
Let's look at the next thing we have.
02:03
We have si to iodine.
02:06
S .i is, again, 1 .8.
02:09
Iodine is 2 .5.
02:13
The difference here is going to be 0 .7...