In which of the following pairs A is more stable than B?

In which of the following pairs A is more stable than B?

Solution

Ph 3 C •  ​>  CH 3 C •
In Ph 3 C • e − undergoes in delocalization while CH 3 C • is stable due to the +I and hyperconjugation effect of − CH 3 group, because resonance is a predominant factor so the order is above one.
 

Asked in: JEE Main 2014 (09 Apr Online)

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