13. Below, the ionic radii of several ions are shown relative to the radius of neutral atoms of the same element. Na* 2+ Mg Na Mg F CI CI 154 pm 116 pm 130 pm 86 pm 71 pm 119 pm 99 pm 167 pm Explain why the ions in the diagram on the left are smaller than their neutral counterparts, while the ions in the diagram on the right are larger than their neutral counterparts.

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