Practice question

MCQ

Question

Which pair of elements from the same group shows the greatest increase in atomic radius?

Options

Choose one · Correct answer highlighted

Na, K Li, Na Correct K, Rb Rb, Cs

Explanation

Atomic radius increases down a group, with the largest jump often between early periods. In group 1, Li (period 2) to Na (period 3) shows a significant increase due to the addition of a new shell, compared to later pairs.

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