The hydries of first elements in grounp 15 to 17 amely NH_(3) H_(2)Oand HF rectivelyshow abnormally high values for meltin and bolting points this is due to

The hydries of first elements in grounp 15 to 17 amely NH_(3) H_(2)Oan

1.	The hydries of first elements in grounp 15 to 17 amely NH_(3) H_(2)Oand HF rectivelyshow abnormally high values for meltin and bolting points this is due to
Answer» Small size of N, O and F The ability to FORM EXTENSIVE intermolecular H - BONDING The ability to form extensive intramolecular H - bonding Effective van der Waals' interaction Solution :Abnormalmelting POINTS due to their ability of forming intermolecular H - bonding