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Isoelectronic Ionic Radius

Posted: Sat Dec 09, 2017 11:05 pm
by Grace Lee 3G
From the midterm practice test,

6. a) Arrange S2-, Cl-, and P3- in order of increasing ionic radius.

Since they all have the same number of electrons, wouldn't their radii be the same length?

Re: Isoelectronic Ionic Radius

Posted: Sat Dec 09, 2017 11:13 pm
by SantanaRodriguezDis1G
ionic radius are different because cations are smaller than their parents while anions are larger than their parents so you cant look at ionic radius as you do atomic radius. I hope this helps

Re: Isoelectronic Ionic Radius

Posted: Sat Dec 09, 2017 11:14 pm
by Lourick Bustamante 1B
Each element has the same amount of electrons, but the amount of protons is not changing. Therefore, the elements with more protons have a stronger pull on the electrons making the atomic radius decrease.