1)

Among the following the strongesr nucleophile is 


A) $C_{2}H_{5}SH$

B) $CH_{3}COO^{-}$

C) $CH_{3}NH_{2}$

D) $NCCH_{2}$

Answer:

Option A

Explanation:

 Nucleophiles are species that have a tendency to donate a pair of electrons. They can be neutral or negatively charged. The nucleophilic power depends on the tendency of species to donate electrons. Due to the presence of the +1 effect, it increases. Hence, the higher the +1 effect, higher the nucleophilic power