00:01
So today we're asked to discuss the molecular structure, bond angle, and polarity for some compounds.
00:06
Our first compound is sf4.
00:10
So this is sulfur tetrafluoride, and so let's take a look at what it looks like.
00:16
So we have our central sulfur atom, and then we have two pharynx bound to it, left and right, and we're going to draw on those valence electrons, and then we have two more, and this time let's remember our molecular geometry for these bodies.
00:37
Bottom two.
00:40
Okay.
00:41
And so after we finish drawing in these valence electrons, we can first recognize that it has a bond angle of 102 and 173 degrees, and that it has a trigonal bi -pyramidal geometry.
01:12
All right, and so the sf dipoles don't cancel, so that also makes this a polar molecule.
01:19
Okay.
01:20
So that's the first one done.
01:22
Now let's look at our bromine trifluoride.
01:27
Okay? and so again, we're going to have the bromine and then we're going to have the three fluorines.
01:38
And let's add in those valence electrons.
01:50
All right.
01:51
And so we can see that there are two lone pairs of valence electrons.
01:56
So we know that this is polar.
01:58
We also know that this is trigonal planner...