Which of the following correctly represents the atomic radius order from largest to smallest?

Options

  • A. Li > Be > B
  • B. B > Be > Li
  • C. Be > Li > B
  • D. Li > B > Be
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. Li > Be > B

Detailed Explanation

Li, Be and B are consecutive elements in Period 2, and atomic radius decreases across the period. Hence Li > Be > B.