Exercise 2 on Cations and Anions of an Isoelectronic Series: Solutions

Question: Which of the following correctly lists the five atoms in order of increasing size (smallest to largest)?

  1. F < S < O < Mg < Ba
  2. O < F < S < Mg < Ba
  3. F < O < S < Mg < Ba
  4. F < O < S < Ba < Mg
  5. O < F < S < Ba < Mg
Solutions:
The answer is (C): F < O < S < Mg < Ba


For more details, please contact me here.