As we move from left to right across a period, the atomic radius generally:

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Across a period, the atomic radius decreases. This is because the number of protons (nuclear charge) increases, pulling the electrons in the same shell closer to the nucleus, while the number of shells remains constant. This increases the effective nuclear charge experienced by the valence electrons.

As we move from left to right across a period, the atomic radius generally: MCQ with Answer and Explanation

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