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3.13  Explain why cation are smaller and anions larger in radii than their parent atoms?

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A cation is smaller than its parent atom because it has fewer electrons while its nuclear charge remains the same. The size of an anion will be larger than that of the parent atom because the addition of one or more electrons would result in increased repulsion among the electrons and a decrease in effective nuclear charge. 

 

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Divya Prakash Singh

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