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25 Points!!! Which ion has the larger ionic radius: Ca 2+ or Cl -?

I am very confused on this topic so please give me the best explanation possible instead of just giving me the answer. I am giving 25 points for a reason thank you!!!

25 Points Which ion has the larger ionic radius Ca 2 or Cl I am very confused on this topic so please give me the best explanation possible instead of just givi class=

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maralod

Answer:

Cl- is has the larger ionic radius

Explanation:

When all atoms/ions are in the same noble gas configuration, then you would just compare the ratio of protons to electrons. Whichever has the highest proton/electron ratio would have the smallest nucleus. Therefore Ca2+ has the smallest nucleus while Cl- has the largest nucleus