Which of the following correct order of ...

Which of the following correct order of nucleophilicity in gaseous phase

A

`I^(-) gt Br^(-) gt Cl^(-) gt F^-`

B

`F^(-) gt Br^(-) gt Cl^(-) gt I^-`

C

`I^(-) gt F^(-) gt Br^(-) gt Cl^-`

D

`F^(-) gt Br^(-) gt I^(-) gt Cl^-`

Verified by Experts

The correct Answer is:

B

Nucleophilicity is inversely proportional to leaving ability hence `F^(-) gt Cl^(-) gt Br^(-) gt I^(-)`

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