This isn't so much a homework question as a question to help me undertstand how to do my homework.
The book says that nucleophilicty roughly parallels basicity. Which makes sense since bases are electron pair donors, and an electron pair makes a nucleophile.
but then it says nucleophilicity increases going down a column of the periodic table. I understand that because of the larger valence shells going down a column means the electrons will be held less tightly so they will be more reactive. But this also goes against my intuition because I know that acidity increases going down a column as well??? And since nucleophilicity should increase with basicity, this seems to be a conflicting idea to me?
Can anyone explain?