Zwitterions are examples of
Molecules that contain an equal number of positively and negatively charged groups bear no net charge. These ionized neutral species are termed zwitterions.
Zwitterions are one example of an isoelectric species the form of a molecule that has an equal number of positive and negative charges and thus is electrically neutral.
Ref: Harper’s illustrated biochemistry. 30th edition page no: 20
Anions
Cations
Neutral ions
None of the above
Neutral ions