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Alchols
R-OH
polar
ethers
R-O-R
slightly polar
thiols
R-S-H
non- polar
aldehydes
R-COH
polar
keytones
R- CO-R
polar
carboxylic acids
R- COOH
polar
carboxylates
R- COO-
ionic
esters
R-CO-O-R
slightly polar
amides
R- CO-NH-R
polar
(bottom R' is marked as H)
primary amine
R- NH2
polar
secondary amines
RR-NH
slightly polar
tertiary amine
RRR- N
non-polar
aromatic
fragrant