Do "poor" leaving groups form ions of poor stability?
The general idea is that "poor" leaving groups have a strong nucleophilicity, or a strong "desire" to not bring its electrons with it and allow the bond to break.
You can determine how "poor" of a leaving group it is by knowing the pKa of the acid related to the leaving group. The pKa of
Also, as a general rule, weaker acids tend to be more stable than stronger ones (weaker acid, stronger basicity in the bonds, tends more to maintain the interaction, doesn't dissociate as easily), so since the conjugate acid of a strong base is a strong acid, the