Increasing Ionic radius

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Jimmy lira-1G
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Joined: Fri Apr 06, 2018 11:03 am

Increasing Ionic radius

Postby Jimmy lira-1G » Tue May 08, 2018 3:36 pm

What do the anions have to do with the organization of the ionic radius
for example
order these :

s^2- , cl-, p^3-

Answer : p^3-, s^2-, cl-
How do I organize by increasing ionic radius with regard to the anions ?

-Jimmy Lira 1G

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Re: Increasing Ionic radius

Postby Chem_Mod » Tue May 08, 2018 4:20 pm

See if this post clarifies it:

Kara Justeson 1B
Posts: 31
Joined: Fri Apr 06, 2018 11:03 am

Re: Increasing Ionic radius

Postby Kara Justeson 1B » Tue May 08, 2018 4:25 pm

Since all of these ions have the same configuration which would be the configuration of Ar (they're isoelectronic), you would order them based on the number of protons they have. Since p has the fewest number of protons, it would pull the electrons the least and therefore have the largest ionic radius of the three. Based on that you could order it (in terms of increasing ionic radius) where Cl- < S^2- < p^3- because Cl has the most protons and therefore woul pull the electrons the most and have the smallest radius.

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