Precedent in polarizability of cations?

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Pranav Kadiyala 1A
Posts: 119
Joined: Wed Sep 30, 2020 9:58 pm

Precedent in polarizability of cations?

Postby Pranav Kadiyala 1A » Tue Dec 08, 2020 7:50 pm

What takes precedent in determining the polarizability of cations, size or charge? For example, which cation has higher polarizing power - Al3+, or Li+?

TrishaP_3E
Posts: 50
Joined: Wed Sep 30, 2020 9:58 pm

Re: Precedent in polarizability of cations?

Postby TrishaP_3E » Tue Dec 08, 2020 7:57 pm

I believe charge takes precedence. I'm not entirely sure, but I think it has to do with Coulomb's law and the fact that d is squared =, while charge isn't.

Juliet Cushing_2H
Posts: 103
Joined: Wed Sep 30, 2020 9:39 pm

Re: Precedent in polarizability of cations?

Postby Juliet Cushing_2H » Tue Dec 08, 2020 8:24 pm

I think that in this specific example the charge difference is the main factor because +3 is noticeably greater than +1. If the charge difference were less, say +2 and +1, then size might take precedent.

IshanModiDis2L
Posts: 84
Joined: Wed Sep 30, 2020 9:49 pm

Re: Precedent in polarizability of cations?

Postby IshanModiDis2L » Tue Dec 08, 2020 9:54 pm

I believe charge takes precedence and then size but it may be situational as well.


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