Which statement best helps to explain the observation that NH3 boils at C whereas PH3 boils at?

NH3 molecules makes strong intermolecular H bonding b/w themselves. But due to lesser electronegativity of larger PH3 molecules, they cannot form Hydrogen Bonding b/w themselves. In NH3, there is hydrogen bonding whereas in PH3 there is no hydrogen bonding. Therefore, the NH3 has higher boiling point than PH3.

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Mathematics, 04.08.2021 16:00

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Which statement best helps to explain the observation that NH3(l) boils at −28°C , whereas PH3(l)boils at −126°C ?

This is a List of Available Answers Options :

NH3 has hydrogen bonding that is stronger than the dipole-dipole forces in PH3.
NH3 has hydrogen bonding that is weaker than the dipole-dipole forces in PH3.
The dispersion forces in NH3 are stronger than the dipole-dipole forces in PH3.
The dispersion forces in NH3 are weaker than the dispersion forces in PH3.

The best answer is A. NH3 has hydrogen bonding that is stronger than the dipole-dipole forces in PH3..

Reported from teachers around the world. The correct answer to ❝Which statement best helps to explain the observation that NH3(l) boils at −28°C , whereas PH3(l)boils at −126°C ?❞ question is A. NH3 has hydrogen bonding that is stronger than the dipole-dipole forces in PH3..
I Recommend you to read the next question and answer, Namely Which of the following is an isomer of CH3OCH3 ? with very accurate answers.

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