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Among the given pairs ,in which pair fir...

Among the given pairs ,in which pair first compound reacts faster than second compound in `S_(N^(1))` reaction ?

A

`CH_(3)-CH_(2)-CH_(2)-CH_(2)-Br orCH_(3)-CH_(2)-underset(Br)underset(|)CH-CH_(3)`

B

`CH_(3)-underset(Br)underset(|)overset(CH_(3))overset(|)C-CH_(2)-CH_(2)orCH_(3)-CH_(2)-underset(Br)underset(|)CH-overset(CH_(3))overset(|)CH-CH_(3)`

C

D

`CH_(3)-underset(Br)underset(|)overset(Br)overset(|)C-CH_(3) or CH_(3)-underset(I)underset(|)overset(CH_(3))overset(|)C-CH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) In `CH_(3)-overset(CH_(3))overset(|)underset(Br)underset(|)C-CH_(2)-CH_(3)` rate fo treaction is faster then `CH_(3)-underset(Br)underset(|)C-overset(CH_(3))overset(|)CH-CH_(3)` bacause in formaer compound stable `C^(o+)` is formed.
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