JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The longest and shortest periods are

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Correct option: C

6 & 1

Option C (6 & 1) is correct because the 6th period has 32 elements and is the longest, while the 1st period has only 2 elements and is the shortest.

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\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

\mathrm{F}^{-}