00:01
So for the first part of this question, we're asked how you determine whether a molecule is polar.
00:06
So if we look at all these things, which would we use to determine if it's polar? so one, would we determine if it has polar bonds? well, yes, because then if it had polar bonds, then the molecule would be polar.
00:18
Next, would we determine if the bonds are ionic or covalent? well, yes, because if the bond was ionic, then it wouldn't be polar.
00:31
And same thing of covalent.
00:33
If it was covalent, then it wouldn't be polar.
00:36
Polar is kind of somewhere in the middle between an ionic bond and a covalent bond.
00:45
So i guess if we were determining the bonds are ionic or covalent, then we would be determining that it was not a polar bond.
00:56
So we necessarily wouldn't need that one.
01:01
Next, draw the lewis structure.
01:03
Well, yes, this would be important because symmetry matters in determining a polar.
01:10
If it is asymmetrical, a lot of times it will be polar.
01:14
But if it's symmetrical, it depends on the arrangement of the atoms within that structure.
01:19
So symmetry plays into dipole moments and polarity.
01:22
So yes, we'll be looking at drawing a lewis structure.
01:25
And then determining whether the polar bonds form a net dipole moment...