MHT CET 2026 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2026

Which group elements have the smallest atomic radii in their respective periods?

(A)group 15
(B)group 16
(C)group 17Correct
(D)group 18

Answer: (C)

Solution

Atomic radius decreases from left to right across a period because the effective nuclear charge increases while electrons enter the same shell. The halogens (group 17) are placed at the extreme right of the period, just before the noble gases, and have the highest effective nuclear charge among the elements whose

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Question ID VK-098634