Q. The correct order of C–O bond length among CO, CO₃²⁻, CO₂ is
A) CO < CO₃²⁻ < CO₂
B) CO₃²⁻ < CO₂ < CO
C) CO < CO₂ < CO₃²⁻
D) CO₂ < CO₃²⁻ < CO
Explanation
[Solution from source] C–O bond order is about 3 in CO, 2 in CO₂ and 1⅓ in CO₃²⁻ (resonance). Higher bond order means a shorter bond, so CO < CO₂ < CO₃²⁻. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.