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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

The outermost electron is most loosely held in:

Answer: (D)

Solution

As atomic radius increases down group 1, the outermost (valence) electron becomes progressively farther from the nucleus and more effectively shielded, so it becomes more loosely held.

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Question ID VK-137932