In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively. (A) Na & Cl (B) K & Se (C) K & Br (D) Rb & Br

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Question

In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.

(A) Na & Cl
(B) K & Se
(C) K & Br
(D) Rb & Br

Prashant Kotian · Accepted Answer

Correct answer: C. In a period moving from left to right atomic size decreases.

💡 Solution & Explanation