⭐《ANSWER》
↪To know that a molecule is polar or non-polar
↪we will look that , does it contain the Electronegative elements that can create a partial positive or Negative charge, such as the HALOGENS
↪after this , also we can observe that , is there any amonia group or a carboxylic group that can create a positive or negative charge by transfer or acceptance of the Hydrogen atom
↪Also in case of the amino acids when the, acids are mixed in soluble solvent there is charge transfer , due to which there is formation of
〽ZWITTER ION