(Polar molecules, Non-polar molecules, etc.)
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I understand that a polar molecule must have polar bonds with dipoles that do not cancel. I also understand that a nonpolar molecule must have zero an electric dipole moment which is possible if it contains non-polar bonds. My question is how can you identify the difference and determine whether a molecule is polar or not. can an example and explanation be provided as to why it would either be polar or non-polar
To determine if a molecule is polar or nonpolar it is easiest to start by drawing its dipole moment or shape. This can be done by basically just drawing the Lewis structure first, then add arrows pointing to the more electronegative atom from each individual bond. For example, in CCl4, all the arrows point from the carbon to each individual chlorine atom because chlorine is more electronegative and you can see from this that the dipole moments would cancel out. If they cancel out, it is nonpolar, or if do not cancel out, it is polar. I am not sure how to attach pictures here to be honest, but maybe someone else will be able to show you what it looks like.
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