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The decreasing order of nucleophilicitie...

The decreasing order of nucleophilicities of the following is :
(I) `Br^(Ө)`
(II) `MeO^(Ө)`
(III) `Me_2 N^(Ө)`
(IV) `Me_3 C^(Ө)`.

A

`(I) gt (II) gt (III) gt (IV)`

B

`(IV) gt (III) gt (II) gt (I)`

C

`(IV) gt (III) gt (I) gt (II)`

D

`(II) gt (I) gt (III) gt (IV)`

Text Solution

Verified by Experts

The correct Answer is:
B
Acidity : `HBr gt MeOH gt Me_2NH gt Me_3 CH`
Basicity and nucleophilicity :
`Br^(Ӫ) lt MeO^(Ӫ) lt Me_2 N^(Ӫ) lt Me_3 C^(Ӫ)`
i.e., `(IV) gt (III) gt (II) gt (I)`.
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