00:01
So today, we're given some compounds that we need to draw the lewis structure for.
00:05
We have methane, ammonia, water, borane, sulfur dioxide, and carbon dioxide.
00:12
So let's start with our methane.
00:14
We have the formula c .h .4.
00:16
And so that means that we have a central carbon atom that is surrounded by four hydrogens.
00:23
And these hydrogens all share one pair of bonding electrons for a total of four pairs and eight valence electrons.
00:38
Okay? and now we have ammonia with formula nh3.
00:44
Now, that means that we have the same idea as with our methane.
00:48
We have a central nitrogen surrounded by three hydrogens.
00:55
However, there's one more pair of valence electrons.
00:58
So we have a total of four pairs again, but this time one of those pairs is a lone pair because it's not bonded to anything and eight valence electrons.
01:10
Okay? the next thing we're going to be looking at is water.
01:16
So h2o.
01:17
Now, that means that our oxygen atom is in the center and it's bound to two hydrogens.
01:24
However, the oxygen has two more pairs of valence electrons...