00:02
Hi there.
00:03
This question is asking about the shape of a water molecule.
00:08
The water is, of course, h2o.
00:10
So to answer this question, i want to sketch a lewis dot structure for.
00:15
To do that, we need to know how many valence electrons we have to work with.
00:19
So there are two hydrogens.
00:21
Each hydrogen is in group one of the periodic table.
00:23
So each hydrogen has one valence electron.
00:26
There's one oxygen.
00:28
Oxygen's in group 6a of the periodic table.
00:31
So it has six valence electrons.
00:33
This gives us a total of eight.
00:36
Two plus six gives us eight valence electrons.
00:40
In a lewis dot structure, each valence electron is represented by a dot.
00:45
So that means my structure needs eight dots.
00:49
Well, oxygen is going to be in the middle, and it's going to be surrounded by the two hydrogens...