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Which of the following free radicals is ...

Which of the following free radicals is the most stable?

A

`overset(.)CH_(3)`

B

`overset(.)CH_(2)CH_(2)CH(CH_(3))_(2)`

C

`CH_(3)overset(.)CHCH_(2)CH_(3)`

D

`CH_(3)CH_(2)overset(.) C(CH_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Order of stabilityd of free radicals
Tertiary gt Secondary gt Primary gt Methyl
Radicals are electron-dificient because `C` has only `7` electrons in its valence shell. Since `R` groups are electron-donating via induction, the more alkyl groups bonded to the electron deficient `C`, the more stable the radical is.
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