question_answer

In solid ammonia, each \[N{{H}_{3}}\] molecule has six other \[N{{H}_{3}}\]molecules as nearest neighbours. \[\Delta H\] of sublimation of \[N{{H}_{3}}\]at the melting point is\[30.8\,\,\,kJ\,\,\,mo{{l}^{-1}}\], and the estimated \[\Delta H\] of sublimation in the absence of hydrogen bonding is 14.4 kJ mol-1. Strength of H-bond in solid \[N{{H}_{3}}\] is approximately

A)  \[5.5\text{ }kJ\text{ }mo{{l}^{-1}}\]

B)         \[16.4\text{ }kJ\text{ }mo{{l}^{-1}}~~~\]

C)  \[2.7\text{ }kJ\text{ }mo{{l}^{-1}}\]    

D)         \[-2.7\text{ }kJ\text{ }mo{{l}^{-1}}\]