QUE: WHY ALIPHATIC AMINES ARE MORE BASIC THAN AROMATIC AMINES ?

ANS : In aromatic amine like aniline lone pair of e's which are responsible for basicity are involve in resonance with pie electrons of ring hence not easily available for protonation . But in aliphatic amine lone pair is fully available for protonation .Hence aliphatic amines are more basic than aromatic amines .

lone pair is delocalized