Amines are derivatives of ammonia and are classified as 1^@, 2^@ , and 3^@ Primary and secondary (but not teritary amines) form intermolecular hydrogen bonds and thus they boil at higher temperature than expected.Like ammonia, all amines are basic, although they differ in their basic nature.As amines are considered as derivatives of ammonia, quatemary ammonium salts are considered as derivatives of ammonium salts.Only the quatemary ammonium salts can show optical activity. Methylethylpropyl amine is optically inactive because

Amines are derivatives of ammonia and are classified as 1^@, 2^@ , and

1.	Amines are derivatives of ammonia and are classified as 1^@, 2^@ , and 3^@ Primary and secondary (but not teritary amines) form intermolecular hydrogen bonds and thus they boil at higher temperature than expected.Like ammonia, all amines are basic, although they differ in their basic nature.As amines are considered as derivatives of ammonia, quatemary ammonium salts are considered as derivatives of ammonium salts.Only the quatemary ammonium salts can show optical activity. Methylethylpropyl amine is optically inactive because
Answer» It is not tetrahedral Its molecules are superimposable on their MIRROR image The enantiomers are rapidly interconverted into each other the nitrogen is `sp^2` hybridized Solution :Although the mirror image of `R_1 R_2 R_3` N type of AMINE is not superimposable on its object, YET the molecule is OPTICALLY INACTIVE because of rapid inversion of configuration between the two arrangements i.e. the two enantiomers are only hypothetical are not isolated.