In the above compound, the amine group is attached to the parent chain of 2 carbon atoms and a methyl and ethyl group is attached to N-atom of the amine group, thus the IUPAC name of the given compound is N-ethyl-N-methyl ethan-1-amine.
(B) C2H5−C2H5|N−C2H5
In the above compound, the amine group is attached to the parent chain of 2 carbon atoms and a methyl and ethyl group is attached to N-atom of the amine group, thus the IUPAC name of the given compound is N,N-diethyl ethan-1-amine.