Practice question
Question
Which group contains only p-block elements?
Explanation
p-block spans groups 13–18. Options: (1) Na (group 1), Mg (group 2) → s-block; (2) B (group 13), C (group 14) → p-block; (3) Li (group 1), Be (group 2) → s-block; (4) K (group 1), Ca (group 2) → s-block.
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