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Difference between O2- and N3-

Posted: Wed Nov 21, 2018 1:14 pm
by ariellasarkissian_3H
In the solutions manual of the textbook, it says that N3- is more polarizable than O2-. I know that polarizability increases as the atom gets bigger and has less charge. N3- is bigger than O2-, but it also has more charge. Does this mean that when the pattern is not consistent, it is more important to take into account the size rather than the charge?

Re: Difference between O2- and N3-

Posted: Wed Nov 21, 2018 1:42 pm
by Kenan Kherallah 2C
So N3- is more polarizable than O2- because N3- is actually larger than O2- as well as less electronegative. My TA said that the trends for polarizability is actually the larger the atom is and the less electronegative, the more polarizable it is. So I dont think the charge here matters, its just telling you or indicating that the ionic radius of N3- is bigger than O2-.

Re: Difference between O2- and N3-

Posted: Wed Nov 21, 2018 1:45 pm
by Melody Zhang 3L
Polarizability does depend on both the charge and the atomic radius, and it increases as atomic radius increases and charge decreases. In this case, I believe N3- is more polarizable because there was a greater difference between atomic radii.

Re: Difference between O2- and N3-

Posted: Wed Nov 21, 2018 1:49 pm
by Melody Zhang 3L
Actually, I just searched it up and it says that 02 is more polarizable than n3 because 02 is larger than n3