explain more about zwitterionic form.
zwitterion is a neutral molecule which has both a positive and a negative electrical charge on it at different locations within the molecule.
They are also called inner salts. For e.g. amino acids as they contain both an ammonium and a carboxylate group.
It can be viewed as arising via a kind of intramolecular acid-base reaction as the amine group deprotonates the carboxylic acid group.