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Q.

Is it true that the atomic size increases down the group?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
In the modern periodic table, as we move down the groups, the atomic size of the elements increases. This is due to the fact that new shells get added as we go down the group. This results in an increase in the distance between the outermost electrons and nucleus and therefore, the atomic size increases.    
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