NH_(3) molecules remain associated through intermolecular hydrogen bonding but there is not such association among HCl molecules even though electronegativities of N and Cl are the same explain

NH_(3) molecules remain associated through intermolecular hydrogen bon

1.	NH_(3) molecules remain associated through intermolecular hydrogen bonding but there is not such association among HCl molecules even though electronegativities of N and Cl are the same explain
Answer» Solution :Although the ELECTRONEGATIVITIES of nitrogen and chlorine are same, nitrogen can form hydrogen bond but Cl cannot. This is because N-atom is much smaller than Cl-atom. Due to large size of Cl-atom, the ELECTROSTATIC attraction between Cl-atom of one molecule and H-atom of another molecule becomes WEAK. hence, Cl does not form hydrogen bonds while `NH_(3)` molecules UNDERGOES association by intermolecular hydrogen bonds.