1.

Which of the following is not an electrophile?

Answer»

`SO_(3)`
`NH_(3)`
`OVERSET(+)(C )H_(3)`
`BF_(3)`

Solution :(A) `SO_(3)` (C )`overset(+)(C )H_(3)` and (D) `BF_(3)` are ELECTRON defficient, having vacant orbital and are electrophilies.
(B) `NH_(3)` is a Lewis base it has nonbonding electron pair on N. It is not an electrophile but is a nucleophile


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