Question

Which of the following will have weakest indicated C-H bond?

Answer 1

Answer:

Option no 2 has the weakest indicated C-H bond

Answer 2

The compound that will have the weakest indicated C-H bond is the one in option 1.

• We can check the strength of the C-H bond by comparing the stability of carbanion formed after breaking the C-H bond.
• The most stable carbanion will correspond to the weakest C-H bond , as that bond will have a greater tendency to break.
• The carbanion formed in option 1 is most stable as it is stabilized by the electron withdrawing nature of the nitro group.