which-property-is-unique-to-ionizable-r-groups-compared-to-non-ionizable-r-group

Question

Which property is unique to ionizable R groups compared to non-ionizable R groups?

Accepted Answer

Ability to participate in acid-base reactions.

Answer

Inability to form hydrogen bonds.

Answer

Lack of a pKa value.

Answer

Presence of hydrophobic side chains.