1.

Consider the following reaction CH_(3)-underset(D)underset(|)(C)H-underset(CH_(3))underset(|)(C)H-CH_(3)-overset(**)(B)rto overset(**)(X)+HBr The structure of overset(**)(X) is

Answer»

`CH_(3)-UNDERSET(D)underset(|)(C)H-underset(CH_(3))underset(|)(C)H-overset(**)(C)H_(2)`
`CH_(3)-underset(D)underset(|)(C)H-underset(CH_(3))underset(|)(overset(**)(C)-CH_(3)`
`CH_(3)-underset(D)underset(|)(overset(**)(C)-underset(CH_(3))underset(|)(C)H-CH_(3)`
`CH_(3)-overset(**)(C)H-underset(CH_(3))underset(|)(C)H-CH_(3)`.

Solution :`CH_(3)-underset(D)underset(|)((C)H-underset(CH_(3))underset(|)overset(**)(C)-CH_(3)` (tertiary free radical) is MAXIMUM. Stable DUE to hyperconfiguration.


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