Easy MCQ +4 / -1

Which of the following shows correct order of atomic size?

  1. A Li < Be < B < C Correct answer
  2. B Li > Be > B > C
  3. C Li > Na > K > Rb
  4. D Li < C < N < O

Solution

Across a period, atomic size decreases due to increasing nuclear charge. So Li > Be > B > C is wrong; it should be Li < Be < B < C across period 2.

About this question

Subject: Chemistry · Chapter: Periodic Table and Periodicity · Topic: Periodic Trends

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