Question

the boiling point of NH3 is more than ph3​

Answer 1

Although PH3 is a larger molecule with greater dispersion forces than ammonia,NH3 has very strong and polar N-H bonds leading to strong hydrogen bonding. This dominates the intermolecular force and results in a greater attraction between NH3 than the PH3 molecules

Answer 2

$\huge\boxed{\underline{\mathcal{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

• ❤.. Unlike ${NH3,PH3}$ molecules are not associated through hydrogen bonding in liquid state.
• ❤.. That is why the boiling point of ${PH3}$ is lower than${NH3}$.