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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

Which of the following ions has the highest ionic radius?

Answer: (C)

Solution

(, 10 e⁻) and (, 10 e⁻) are isoelectronic with 2 shells, whereas and (2 e⁻) have only 1 shell. Between the

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Question ID VK-156525