-OH
Hydroxyl or alcohol
What is a functional group?
Functional groups are groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.
-SH
Thiol or sulphydryl
-COOH
Carboxyl
-CONH2
Amide
-NH2
Amine
-NO2
Nitro
-X
Halide where X = Br, I, F or Cl
-CHO
Aldehyde
-C-
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O
Ketone