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Dipole-Dipole Moments

Posted: Wed Nov 13, 2019 3:48 pm
by KNguyen_1I
The larger the molecule means a greater amount of electrons to be polarized, and therefore a stronger induced dipole-dipole moment?

Re: Dipole-Dipole Moments

Posted: Wed Nov 13, 2019 3:51 pm
by Alex Hitti 3E
The larger the molecule means a greater amount of electrons to be polarized, and therefore a stronger induced dipole-dipole moment?

Yes, the molecular size is proportional to the strength of the dipole moment. As one increases, so does the others.

Re: Dipole-Dipole Moments

Posted: Wed Nov 13, 2019 4:00 pm
by 205296774
Yes, the dipole-dipole moment is dependent on the difference in electronegativity and the ability to be polarized. Atoms with a high electronegativity and therefore smaller radius have a stronger polarizing power to distort something else with a larger radius and lower electronegativity. (The electrons are less tightly packed and susceptible to change).

So, the greater the difference in EN or radius, the greater the polarization, and the greater the dipole-dipole moment.

Re: Dipole-Dipole Moments

Posted: Wed Nov 13, 2019 4:16 pm
by JinwooLee_1F
I think IMF for induced-dipole-dipole is proportional to polarizability, which is affected by size and charge. So greater the size, greater the IMF for for induced-dipole-dipole.