what is the difference between nucleophilicity and basicity?
Nucleophilicity means the ability of a species to act as a nucleophile. A nucleophile can be any negative ion or any neutral molecule that has at least one unshared electron pair. Nucleophile is a substance that is very electropositive, therefore, like to interact with positive centers whereas Basicity is the ability to act as a base. Bases are defined in several ways by various scientists. Arrhenius defines a base as a substance that donates OH– ions to the solution. Bronsted- Lowry defines a base as a substance that can accept a proton.