Intermolecular forces

[richard304]

If I have to explain why instantaneous dipole-induced dipole attraction can be greater than permanent dipole- permanent dipole attraction,

should I write :
1) It's because for larger molecules, they have higher polarizability, and therefore, so as the instantaneous dipole induced dipole attraction.
or

2) It's because larger molecules, molecular surface area increases, as well as contact surfaces. So intantaneous dipole , induced dipole can be greater than permanet dipole - permanent dipole attraction.

pleasez

 

[Nino MMP]

help me The correct answer is 1): It's because for larger molecules, they have higher polarizability, and therefore, so as the instantaneous dipole induced dipole attraction. Polarizability is a measure of how easily the electrons within a molecule can be displaced from their equilibrium positions. As molecules increase in size, more electrons are available to be displaced, resulting in a larger instantaneous dipole-induced dipole attraction than what is seen with permanent dipole-permanent dipole attraction.