polarizing power

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polarizing power

Postby Ami_Pant_4G » Sun Nov 03, 2019 5:09 pm

In the lecture, Dr. Lavelle said that ions that cause large distortions have high polarizing powers, but what does large distortion mean? thanks in advance!

Charisse Vu 1H
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Re: polarizing power

Postby Charisse Vu 1H » Sun Nov 03, 2019 5:18 pm

Large distortion refers to the distortion of the electron cloud when an ionic compound is formed. The cation in the ionic compound pulls the anion's electrons closer to itself, distorting the electron cloud in the direction of the cation. That is why small cations have such high polarizing power.

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Re: polarizing power

Postby claudia_1h » Sun Nov 03, 2019 5:26 pm

The large distortion refers to the tendency of electrons in the anion to be pulled towards the cation, creating more covalent character to the bond. Small, highly charged cations like Al3+ have small enough ionic radii and great enough charge that they have high potential to create this distortion of the electron cloud- that is what high polarizing power refers to.

Nathan Rothschild_2D
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Re: polarizing power

Postby Nathan Rothschild_2D » Sun Nov 03, 2019 10:00 pm

So the way to tell what has more polarizing power would be to see which cation is more polar?

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