Question

How can I know in which atom that the reaɡent atom will attack the nuleophilic?

Answer 1

Nucleophilic Substitution (S_N1. S_N2) Nucleophilic substitution is the reaction of an electron pair donor (the nucleophile, Nu) with an electron pair acceptor (the electrophile). An sp³-hybridized electrophile must have a leaving group (X) in order for the reaction to take place.