Among the elements Li,N,C and Be,the one with | vedclass

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(A) As the given elements $Li$,$Be$,$C$,and $N$ belong to the same period,i.e.,the $2^{nd}$ period,the atomic radius decreases on moving from left to

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$Li$

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(A) As the given elements $Li$,$Be$,$C$,and $N$ belong to the same period,i.e.,the $2^{nd}$ period,the atomic radius decreases on moving from left to right across the period.This decrease occurs because the effective nuclear charge increases while the number of shells remains constant.Therefore,$Li$ (Lithium),being the leftmost element in the $2^{nd}$ period,has the largest atomic radius among them.

Among the elements $Li$,$N$,$C$ and $Be$,the one with the largest atomic radius is

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