Polarizable vs Polarizing Ability

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Dhwani Krishnan 1G
Posts: 63
Joined: Fri Sep 28, 2018 12:17 am

Polarizable vs Polarizing Ability

Postby Dhwani Krishnan 1G » Sun Nov 11, 2018 12:50 pm

What is the difference between these two terms, and what they have to do with electronegativity?

Ronak Singh
Posts: 31
Joined: Fri Sep 28, 2018 12:16 am

Re: Polarizable vs Polarizing Ability

Postby Ronak Singh » Sun Nov 11, 2018 2:06 pm

Polarizability is the ease of the distortion of the electron cloud of the atom or molecule.
Polarizing ability is how easily an atom or molecule can distort the electron cloud of another atom or molecule.

Roni Touboul
Posts: 31
Joined: Fri Sep 28, 2018 12:24 am

Re: Polarizable vs Polarizing Ability

Postby Roni Touboul » Sun Nov 11, 2018 2:26 pm

This was helpful thank you.

Julia Lindner 1I
Posts: 35
Joined: Fri Sep 28, 2018 12:17 am

Re: Polarizable vs Polarizing Ability

Postby Julia Lindner 1I » Sun Nov 11, 2018 2:41 pm

In general, large anions are highly polarizable because the nucleus' pull on the outermost electrons is smaller due to the size of the anion, so the electron cloud is easily distorted. You can think of it as the electrons not being held very tightly by the nucleus, causing them to be pulled in different directions more easily.
On the other hand, small and highly charged cations have high polarizing power, because the center of the charge can get very close to an anion (due to the cation's small radius) and exert a strong pull on the anion's electrons.


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