Among `NH_(3), H_(2)O, HF` and `H_(2)S` which would have highest magnitude of hydrogen bonding ?

Explanation

HF. This is because fluorine is the most electronegative element. Due to very high electronegativity, it attracts the shared electrons of H-F bond. Thus, the magnitude of positive charge developed on H in `HF (H^(delta+) - F^(delta-))` is much greater than that developed in `NH_(3)` and `H_(2)O`. Hence, HF has the highest magnitude of hydrogen bonding.