WBJEE · Chemistry · Hydrogen
The hydrides of the first elements in groups \(15-17,\) namely \(\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}\) and \(\mathrm{HF}\) respectively show abnormally high values for melting and boiling points. This is due to
- A small size of \(\mathrm{N}, \mathrm{O}\) and \(\mathrm{F}\)
- B the ablility to form extensive intermolecula H-bonding
- C the ability to form extensive intramolecula H-bonding
- D effective van der Waals' interaction
Answer & Solution
Correct Answer
(B) the ablility to form extensive intermolecula H-bonding
Step-by-step Solution
Detailed explanation
Hydrides of \(\mathrm{N}, \mathrm{O}\) and \(\mathrm{F}\) because of the small size and high electronegativity of elements, have ability to form extensive intermolecular between two molecules) hydrogen bonding. Thus, a large amount of energy is required to break these bonds,…
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