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Posted: Sat Nov 10, 2018 4:14 pm
Can someone explain the difference between polarizability and polarizing power to me, and what characteristics do you look for when you want to determine what elements have the highest polarizability or polarizing power. I am having a hard time grasping the concepts.
Posted: Sat Nov 10, 2018 4:19 pm
Polarizability is a measure of how easily the electrons can be distorted around an atom, thus creating a dipole. This depends on the number of electrons that an atom has and the size of the molecule (ex. I2 is a bigger molecule than H2 and has more electrons, is more polarizable). Polarizing power refers to the ability of a cation to distort the electrons of an anion.
Posted: Sat Nov 10, 2018 4:25 pm
Polarizability tends to deal with the anion, while polarizing power deals with the cation.
The more polarizable an anion is, the more easily the electron cloud around it can be distorted.
The higher the polarizing power, the easier it is for the cation to distort an anion's electron cloud.
Posted: Sun Nov 11, 2018 1:46 pm
Is there a trend based on the size of an atom that correlates to its polarizability/polarizing power?
Posted: Sun Nov 11, 2018 1:56 pm
smaller anions have more polarizability. As atoms get bigger in size, they have more polarizing power.