Polarizability

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JoeyAnn Mateo 1D
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Joined: Fri Apr 06, 2018 11:04 am

Polarizability

Postby JoeyAnn Mateo 1D » Sun May 20, 2018 2:46 pm

Can someone please explain to me the general trend of polarization?

nicolesalcedo
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Polarizability

Postby nicolesalcedo » Sun May 20, 2018 2:47 pm

Generally, larger molecules are more polarizable than smaller molecules.

JoeyAnn Mateo 1D
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am

Re: Polarizability

Postby JoeyAnn Mateo 1D » Sun May 20, 2018 2:48 pm

Is this trend the same for cations?

nicolesalcedo
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Polarizability

Postby nicolesalcedo » Sun May 20, 2018 2:49 pm

Smaller, more highly-charged cations have greater polarization power. In terms of ionic radius, polarization increases from big to small atoms. You can refer to question 3.81.

JoeyAnn Mateo 1D
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am

Re: Polarizability

Postby JoeyAnn Mateo 1D » Sun May 20, 2018 2:49 pm

Do anions follow the same trend or is there variability?

nicolesalcedo
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Polarizability

Postby nicolesalcedo » Sun May 20, 2018 2:50 pm

Anions are opposite from anions; polarizability increases as ions get larger and less electronegative.

JoeyAnn Mateo 1D
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am

Re: Polarizability

Postby JoeyAnn Mateo 1D » Sun May 20, 2018 2:52 pm

So generally, just to make sure.
Cations increase in polarizability as atomic radius decreases.
Anions increase in polarizability as atomic radius increases ( and less electronegative).

Normal atoms follow same rule as cations ( same trend as radius size)

nicolesalcedo
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Polarizability

Postby nicolesalcedo » Sun May 20, 2018 2:53 pm

Yes, exactly :)


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