For the following
`(i) I^(-) (ii) Cl^(-) (iii) Br^(-)`
the increasing order of nucleophilicity would be:

Options

A. `Cl^(-) lt Br^(-) lt I^(-)`
B. `I^(-) lt Cl^(-) lt Br^(-)`
C. `Br^(-) lt Cl^(-) lt I^(-)`
D. `I^(-) lt Br^(-) lt Cl^(-)`

Answer

A

Explanation

In case of different nucleophiles but present in the same group of periodic table, larger is the size more is the nucleophilicity the increasing order of nucleophilicity of `X^(-)` ions is: `Cl^(-) lt Br^(-) lt I^(-)`.