How does the atomic radius change down a grou | vedclass

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(A) As we move down a group in the periodic table,a new principal energy shell $(n)$ is added for each successive element. This increases the distance

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It increases.

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(A) As we move down a group in the periodic table,a new principal energy shell $(n)$ is added for each successive element. This increases the distance between the nucleus and the outermost valence electrons. Although the nuclear charge increases,the effect of the additional shell (shielding effect) outweighs the increase in nuclear charge,resulting in an increase in the atomic radius.

How does the atomic radius change down a group in the periodic table?

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