Answer:

1. Why does a negative ion (anion) has a bigger atomic size than its parent neutral atom?

Because the extra electron forms a 3s2 valence electron configuration, the Na ion is bigger than the parent Na atom, although the nuclear charge remains the same.

2. Why does a positive ion (cation) has a smaller atomic size than its parent neutral atom?

This is due to the fact that the number of protons has now surpassed the number of electrons.

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Answer:

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Explanation:

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