in zwitterion there is ammonia (NH3) now the nitrogen is stable by getting electron from 3 hydrogen - Biology - Biomolecules

Question

in zwitterion there is ammonia (NH3) now the nitrogen is stable by
getting electron from 3 hydrogen then why it still connects with
carbon ??

Mushtaq · Accepted Answer

Dear student

Please refer the solution below for the said query
At different pH, the structures of amino acids change because of
ionisable nature of −NH2 and −COOH groups The accepted
practice is to show the amino acids in the zwitterion form
(1) The carboxyl group can lose a hydrogen ion (H+)
to become negatively charged
(2) The amine group can accept a hydrogen ion (H+) to
become positively charged

Hence, the amine group accepts proton (H+) not hydrogen
atom due to presence of lone pair of electron present on nitrogen
atom Hence, it is not stable and due to change in pH, it again
changes to normal form

Hope this information clears your doubt about the topic

Regards

in zwitterion there is ammonia (NH3) now the nitrogen is stable by getting electron from 3 hydrogen . then why it still connects with carbon ??