Sticky Note
The boiling point of ammonia (NH₃) is greater than that of phosphine (PH₃) due to the:
  1. Dispersion forces
  2. Dipole-dipole forces
  3. Hydrogen bonding
  4. Greater molar mass
Explanation

Ammonia (NH₃) has a higher boiling point than phosphine (PH₃)

Ammonia exhibits hydrogen bonding, a stronger intermolecular force than the dipole-dipole forces in phosphine.

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