Answer
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Work Step by Step
When comparing the size of different ions, we concentrate on the ionic radius. The ionic radius is the distance from the nucleus to the outermost electron in an ion. It can be determined by comparing the number of protons and electrons in the ion. Cations are generally smaller than their parent atoms because they lose electrons and experience increased effective nuclear charge. Anions are larger than their parent atoms because they gain electrons, leading to increased electron-electron repulsions..
