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OpenStudy (anonymous):
Rank these ions according to ionic radius from least to greatest. Rb+ Se^2- Br- Sr^2+ As^3- I understand as you move left then down they get bigger, but I don't understand how the numbers and charge affect that.
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OpenStudy (anonymous):
The charge make them ions with a happy valence shell of Kr. Which means that all of those ions have the same ionic radii.
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