00:02
Hi there.
00:02
In this picture, we are given the dot diagram for an ozone molecule, and we want to know the approximate bond angle between the two oxygens.
00:14
Remembering that the way we draw a structure on paper does not necessarily tell us everything we know about its three -dimensional structure.
00:22
So to answer this question, we need to first determine the molecular geometry.
00:34
And before we can even do that, we need to figure out its electron geometry.
00:46
Okay, so let's think about this.
00:49
We have, if we look at the central carbon, or the central oxygen rather, because that is what determines molecular shape is how things are attached to the center atom.
00:59
We see that it has two atoms bonded to it, one through a double bond, one through a single bond, but two atoms are bonded, and there's one lone pair.
01:13
This gives us a total of three electron groups, or three electron domains, if that's where you're used to calling well, if we take three electron groups and we put them on a central atom as far away from each other as possible, we get the electron geometry.
01:35
And the electron geometry for this is trigonal planar.
01:43
We take a sphere and we divide it into three equal sections.
01:46
So each section, if we take a circle and we divide in thirds, each of these is going to be 120 degrees for the bond angle...