Polarizability

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NatBrown1I
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Polarizability

Postby NatBrown1I » Sun Nov 25, 2018 4:29 pm

What defines covalent character and polarizability?

Jessica Chen 1F
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Re: Polarizability

Postby Jessica Chen 1F » Sun Nov 25, 2018 4:51 pm

Polarizability means that the electron clouds of an atom readily undergo a large distortion. Anions have high polarizability because they are larger and have a bigger electron cloud. The nucleus exerts weak control over valence electrons because there is a lower effective nuclear charge and the electron cloud is easily distorted. Cations are thus not very polarizable because they are smaller and have greater effective nuclear charge.

804991762_4A
Posts: 47
Joined: Fri Apr 06, 2018 11:04 am

Re: Polarizability

Postby 804991762_4A » Sun Nov 25, 2018 4:59 pm

Covalent character is a covalent bond, which is formed through sharing electrons. So in the covalent character has some ionic character because the two atoms have different electronegativity

Polarizability is a measure of how more easily the electron cloud can be distorted. Polarity is the separation of charges meaning electrons hang on close to one side of the bond creating a slightly negative share in that area and a slightly negative charge around the other atom.

NatBrown1I
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Re: Polarizability

Postby NatBrown1I » Mon Nov 26, 2018 12:15 am

Just found it! The degree of covalent character increases with increasing charge density of a cation and increasing size of an anion.


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