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Atomic Radius of Ions

Posted: Tue Nov 03, 2015 7:14 pm
by navessor
Question 5B. on the 2014 Midterm: Arrange S^2-, Cl-, and P^3- in order of increasing ionic radius.

It was not CL>S>P

Re: Atomic Radius of Ions

Posted: Tue Nov 03, 2015 8:35 pm
by Ronald Yang 2F
They are all isoelectronic, so basically the one with a lower effective nuclear charge would have a higher ionic radius (essentially, the one with less protons). Thus, in increasing ionic radius form, that would be Cl-<S2-<P3-.

Re: Atomic Radius of Ions

Posted: Tue Nov 03, 2015 8:57 pm
by Chem_Mod
Nice answer, Ronald.