Q. The correct order of increasing bond length of C–H, C–O, C–C and C=C is
A) C–H < C–O < C–C < C=C
B) C–H < C=C < C–O < C–C
C) C–C < C=C < C–O < C–H
D) C–O < C–H < C–C < C=C
Explanation
[Solution from source] Typical bond lengths: C–H ≈ 109 pm, C=C ≈ 134 pm, C–O ≈ 143 pm, C–C ≈ 154 pm. So the increasing order is C–H < C=C < C–O < C–C. A double bond is shorter than any of the carbon single bonds to C or O. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.