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  4. Increase in atomic size down the group is due to

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Q. Increase in atomic size down the group is due to

Bihar CECEBihar CECE 2008

Solution:

In a given group, atomic size increases due to addition of extra shell which outweighs the effect of increased nuclear charge. Number of shells increases with addition of extra electrons. Hence, increase in atomic size down the group is due to increase in number of electrons.