Question

Which of the following atoms cannot exhibit expanded octet in their compounds?

• A. C
• B. N
• C. O
• D. All of the above

Answer 1

The correct option is D All of the above

The expanded octet is observed in atoms that have vacant $d-$ orbitals. Since $C,N$ and $O$ do not have vacant $d-$ orbitals, they cannot exhibit expanded octet.