1.

Which of the following is not a nucleophile ?

Answer»

`OH^(-)`
`HSO_(3)^(-)`
`NH_(3)`
`BF_(3)`

SOLUTION :Nucleophile is electron rich. AMONG the given, `BF_3` is electron DEFICIENT molecule since B has incomplete OCTET. Hence it is an electrophile, but not nucleophile.


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