(b) Which type of intermolecular attractive force operates only between polar molecules?

Video transcript

Hello everyone today. We have the following problem identify which of the following attractive forces is exhibited only in polar molecules such as acetone molecules. So polar molecules such as acetone exhibit di pole di pole forces and this is due to its structure. You have a carbon, it's gonna be out of tone. And so acetone has this permanent dipole moment where the majority of the electrons are concentrated on this oxygen molecule because it is more electro negative than carbon. And so we can say that this oxygen is partially negative and this carbon is partially positive. The partial positive side of this structure is just the side of the carbon here while the negative is at the end where the oxygen is. And so that's why. Andrew choice C. Is correct. Diet paul di paul forces. That's the only one that exists in polar molecules. Ionic forces is incorrect because that only exists between ions. Hydrogen bonding is incorrect because it only occurs in molecules such as nitrogen, oxygen and flooring with another hydrogen and metallic forces are incorrect because this applies to metallic substances which is not acetone. And so with that we've answered the question overall. I hope this helped. And until next time