Question
Which of the following statement is incorrect about nucleophiles?
a) Nucleophiles have an unshared electron pair and can make use of this to react with an electron deficient species
b) The nucleophilicity of an element (an electron donor) generally increases on going down a group in the periodic table
c) A nucleophile is electron-deficient species
d) All good nucleophiles are good bases when we deal across the period