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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

How does the ionisation energy of 1st group elements vary? [OJEE 2003]

Answer: (B)

Solution

Descending Group 1, atomic size increases with each added shell, reducing the nuclear attraction felt by the outermost electron, so it becomes

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Question ID VK-133151