Question

Which of the following orders is correct for stability of these radicals?

• A. $\text{P > Q> R}$
• B. $\text{R > Q > P}$
• C. $\text{Q > R > P}$
• D. $\text{P > R > Q}$

Answer 1

The correct option is D $\text{P > R > Q}$

More the number of alpha hydrogens, more is the hyperconjugative structures and hence more will be the stability.

Therefore the order for stability is $\text{P > R > Q}$.