Which of the following groups contain only electrophiles ?

1.	Which of the following groups contain only electrophiles ?
Answer» `BF_(3) , NH_(3), H_(2) O` `AICI_(3), SO_(3) , NO_(2)^(+)` `NO_(2)^(+), CH_(3)^(+), CH_(3) - C = O` `C_(2) H_(5)^(-) , C_(2) H_(5) , C_(2) H_(5)^(+)` Answer :B::C

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