JEE Main Chemistry question

In third row of Periodic Table, the atomic radii from Na to Cl

(A)Continuously decreasesCorrect
(B)Continuously increases
(C)Remains constant
(D)Increases but not continuously

Answer: (A)

Solution

Across period 3, each successive element adds a proton (raising nuclear charge) while electrons enter the same shell (n=3), so the electron cloud is pulled in progressively more

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Question ID VK-133254