Rank the following in order of decreasing nucleophilicity,putting the most nucleophilic first.

Question

Quizplus · Accepted Answer

Nucleophilicity increases with increasing electron density and decreasing electronegativity. The neutral nucleophiles are generally more nucleophilic than their corresponding anions. In this case, III is the most nucleophilic because it has both high electron density and low electronegativity. II is less nucleophilic than III because it has higher electronegativity. IV is less nucleophilic than II because it is an anion and has less electron density. I is the least nucleophilic because it has high electronegativity and low electron density. Therefore, the correct order is III > II > IV > I.

Rank the Following in Order of Decreasing Nucleophilicity,putting the Most