1.Alkylamines are generally less basic than arylamines because N is sp hybridised
2.Arylamines are generally more basic than alkylamines due to aryl group
3.Arylamines are generally less basic than alkylamines due to delocalisation of lone pair of electrons in the benzene ring
4.Alkylamines are generally less basic than arylamines because lone pair of electrons on N in the arylamines are not delocalised in the benzene ring