00:01
A molecule is formed when atoms share electrons in order to form bond.
00:06
When atoms unequally share electrons, then the molecule is said to be polar.
00:12
So formed when atoms unequally share electrons of electrons.
00:27
So of course, this happens when the atoms are not identical, when the atoms have large electronegativity difference.
00:37
We also take into consideration that most of the polar molecules are asymmetrical.
00:46
That means they do not have symmetry in their structure.
00:53
So let us identify which among the following choices is a polar molecule.
00:59
So first is o2.
01:01
So o2 is non -polar.
01:04
Simply for the reason that it is composed of identical atoms.
01:09
So it is a molecule made up of two identical oxygen atoms.
01:14
And so the sharing between two identical atoms would be equal.
01:18
So that makes o2 non -bolar.
01:20
Next is h2o.
01:22
So this one we have h funded to o and the atoms are not identical.
01:28
And since oxygen is more electronegative than hydrogen, then o will have greater share.
01:34
Of electrons than hydrogen causing an equal electron sharing between the two atoms making h2o polar...