00:01
Here we are looking to determine the number of valence electrons, the bonding pairs and the lone pairs of electrons are the following structures.
00:08
So firstly we just have water.
00:11
So we have oxygen that can have two lone pairs and then two electrons involved in bonding pairs with two hydrogens.
00:21
So valence electron wise we have eight valence electrons.
00:25
Bonding pairs we just have two because hydrogen can form single bonds and lone pairs.
00:31
As you can see, oxygen has two lone pairs.
00:37
Next, we have nh3, n with five electrons around it, and then three hydrogens.
00:48
So valence electron wise, we have eight valence electrons, if you count them up.
00:52
Bonding pairs, we just have three bonding pairs, one for each hydrogen, loan pairs.
00:59
We just have one lone pair on the nitrogen, as you can see up there...