Any functional group that contributes negative charge must have a lone pair of electrons.
What is a functional group?
The term functional group refers to an atom, group of atoms or a bond that is responsible for the chemical reactivity of the homologous series. A homologous series is any family of compounds.
The question is incomplete. However, any functional group that contributes negative charge must have a lone pair of electrons like amines.
Learn more about functional groups: https://brainly.com/question/14618322
