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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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If Aufbau rule is not followed, K-19 will be placed in

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Correct option: C

d-block

Option C (d-block) is correct because if the Aufbau principle is not followed, the 19th electron would enter the 3d subshell instead of the 4s subshell.

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