Do you think the hydrides of N, O and F will have lower boiling points than hydrides of their corresponding group members? State reasons.

Explanation

The hydrides of the elements N, O and F are `NH_(3), H_(2)O` and HF respectively. These hydrides are expected to have lower boiling points than that of their corresponding group members (`PH_(3), H_(2)S` & HCl) when their masses are considered.
However, because of high electronegativity of N, O and F, their hydrides undergo extensive hydrogen bonding (intermolecular). As a result, boiling points of `NH_(3), H_(2)O` and HF and much higher than the hydrides of their corresponding group members, i.e., `PH_(3), H_(2)S` and HCl respectively.