Chemistry - Halogen Derivative Question with Solution | TestHub

Nucleophiles (ie, nucleus loving) are the species that have atleast one lone pair of electrons for donation, ie, they can also be called Lewis bases. Among the given, ${\mathrm{BH}}_3$ and ${\mathrm{AlCl}}_3$, being electron deficient, behave like electrophiles while $\ddot{\mathrm{N}}{\mathrm{H}}_3$, due to the presence of a lone pair over $\mathrm{N}$, is a nucleophile.