00:01
Hi there.
00:03
In this question, we are comparing the arrangement of the electron pairs in nh3 to ch4.
00:10
So to do this, it looks like we need to sketch out each of these list structures.
00:16
So you can see what's going on.
00:18
So nitrogen has five valence electrons, and each hydrogen brings in one to form three single covalent bonds.
00:28
So our central atom nitrogen has three atoms bonded to it, and it has one lone pair on it.
00:44
If we add three plus one together, we get four electron groups, also known as electron domains.
00:56
Okay, so when these arrange themselves around that central atom, they're going to form an electron geometry that is a tetrahedral.
01:11
And the electron geometry just refers to the electron groups.
01:20
Okay, let's move to ch4.
01:22
We have carbon that has four valence electrons, and then each hydrogen brings in one to form four single covalent bonds...