Home Chemistry Classification of Elements and Periodicity NEET Previous Year Question Which of the following ion is the largest in…
Chemistry Classification of Elements and Periodicity NEET Previous Year Question Single Correct MCQ
Published on: August 13, 2026

Which of the following ion is the largest in size?

A
B
C
D

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The correct answer is:
D

Since all of these ions contain 18 electrons each, so these are isoelectronic. For isoelectronic ions, smaller the positive nuclear charge, greater is the size of the ion.

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