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Question

Radii of atoms increase from top to bottom going down group 2; radii increase from top to bottom going down Group 13(III). If true enter 1, else enter 0.

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Solution

In any group, on moving down from top to bottom, the atomic and ionic radii increase. This is because as the atomic number increases, more number of principal shells are added. Also the inner electrons shield the valence electrons from the nuclear charge. Hence, Radii of atoms increase from top to bottom going down group 2; radii increase from top to bottom going down Group 13(III).

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